Best stc glass rating chart. A quiet home has an STC 40 rating.

Best stc glass rating chart. Estimated STC Rating.

Best stc glass rating chart While STC and OITC ratings are published for various glass configurations, accurate ratings for the A four-point STC improvement can cause a clearly perceptible change in your home’s acoustics, while a 10-point improvement can reduce sound by 50 percent. An STC of 25 is considered bad and an STC of 50 and above is usually a good place to start with soundproofing. stc_rating_chart. You might get something around STC 35. There is plenty of information out there at our fingertips, but it's important to get a full picture. 4. STC (Sound Transmission Class) ratings represent the ability of an assembly to reduce sound decibel levels transferred through walls, ceilings and Data is based on testing ~36″ x 84″ glass to ASTM E413-87 in an acoustical wall. I would be comfortable with something in the high 30s. The first column is the rating of the door panel only; tested in a static inoperable condition to up to the STC rating indicated. V. 1/4" 41 41 1" (26. When thinking about STC ratings, there is a lot to understand and consider. Viracon ,Saflex and a simple formula can helps knows the detailed glass sound transmission loss. There are different ways to improve the Back to Top One-Inch Insulating Glass Units (IGUs) This table compares Vitro Architectural Glass product performance data when assembled in a one-inch (25 mm) insulating glass unit with a ½-inch (13 mm) air space and two ¼-inch (6 mm) lites. This document provides sound transmission class (STC) ratings for various glass and wall constructions. –Veneer plaster partitions achieve up to 63 STC in steel-framed resilient systems and up to 52 STC in wood-framed resilient systems –Have achieved 1- to 4-hr. What Is a Good STC Rating? An excellent rating is an STC of 60 or higher. STC Rating Chart. Ratings are determined by broadcasting a specific auditory tone near the material, and measuring dB on bothsides. In addition, proper installation is critical to ensure that sound does not enter through poorly fitted components. An example of a window STC rating chart is as follows: 26-28 – single pane window; 26-32 – double pane window; 48-54 – soundproof window over a single pane window Mr-Glass; Storm Tight Windows; Now that you’ve seen the rundown, let’s break down what each of these companies’ products can offer homeowners. In this blog, we are covering what you need to know about the most popular insulation sound deadening products, and how they preform. Double glazed windows are a bit superior for blocking sound, with an average rating of An STC label delineates how partitions and walls effectively block sound and reduce noise. STC ratings are pretty straightforward. If you have an STC 33 wall and decide to add another sheet of drywall with an STC of 20 you do not get a finished wall with an STC of 53. A quiet home has an STC 40 rating. % Relative Humidity (RH) at Center: The percentage of relative humidity before condensation occurs at the center of the glass, taken using center of glass temperature. The IIC rating is also noted. Wall Assembly. *OITC is estimate d base d on this test. They are logarithmic values and cannot simply be added. Delta IIC Rating Chart A typical dual-pane window has an STC rating of 25-30. This number is shockingly low because most commercial housing are made with hollow core doors to save costs. Rankings are then calculated using a non-combined logarith Glass size and glazing system will affect STC rating. What is a good STC rating? For further help, check out the STC rating chart below. back to top 2. In the US, it is widely used to rate interior partitions, such as demountable walls and/or glass walls, ceilings/floors, doors, windows and exterior wall configurations. The following chart gives some qualitative intuition for what you can expect from different STC ratings. thicker and better glass combination will increase glass STC ,of course this will bring the increased costs in glass. How to Increase Window STC Rating. 70 60 --STC38 Thinner glass has a low STC rating because sound travels through it easily. When using monolithic glass, increasing the glass thickness can help. 43 - 44. , it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations. 1/8" 35 35 Select materials for sound absorption according to their STC ratings. For instance, a single pane of glass with a rating of 25 Sound transmission class (STC) ratings solve that problem by giving a single value to acoustical performance for a door. Email: info@commercial-acoustics. Where to Buy | Find A Contractor | Become A Certified Contractor | My Favorites (0) | Contact Us | 1-800-426-4261; Windows & Doors; Inspiration; Parts & support; Technical documents; For professionals; Glass thickness,PVB interlayer,air space in insulated glass will increase the glass acoustic performance and sound transmission loss. It’s important to first understand requirements, such as Sound Transmission Class (STC) ratings, decibel levels, glass types, necessary materials, and more. The average STC rating for a regular single pane window is 27. A higher sound transmission class rating indicates more effective sound insulation than a lower rating. What Is a Good OITC Rating for Windows? Sound transmission class (STC) is a single number rating of sound isolation of a building wall assembly. ] SVC Rw summer TL 85-198 TL 85-170 - - TL 85-234 TL 85-229 TL 85-225 - - TL 85-228 - - TL 85-230 TL 85-213 Gaps or weaknesses in the frame can compromise the STC rating. Please contact Oldcastle BuildingEnvelope ® for product availability and Heavier glass and/or different glass thicknesses can be used in lieu of standard glass for a higher reduction of sound. performance of the window frame, the fi nal STC rating of the window assembly could have no infl uence to a 3-point drop in STC ratings from the base glass STC rating. C650 | UltraTM Series Acoustical Ratings The Basics of STC Ratings. The four-point increase in STC rating is the resuH of dampilg provided by the PVB intedayer used in the laminated glass. A heavy carpet and high quality pad work best to improve the IIC value of a floor/ceiling. Find the best door for your job here. The cost, however, may be prohibitive. A normal, single/double The following examples demonstrate improved STC values in floor/ceiling assemblies. If you can live without the light some of the time, I would suggest adding either a door from acousticalshutters. Each frequency is assigned a decibel rating. Laminated glass with an air pocket is often recommended for better soundproofing. OITC* Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 STC RATING CHART: STC: What can be heard at this level: 25: Soft speech can heard and understood: 30: Normal speech can heard and understood: 35: Loud speech can heard and understood: 40: Loud speech can heard, but not understood: 45: The threshold at which privacy begins: 50: Loud sound can be heard, but are very faint: 60+ At this level, good 1-7/8" overall - 1/4" glass, 1/2" airspace, 1/4" glass, 1/2" airspace, 3/16" glass, . STC 30 = This is where most dual-pane windows perform. 38 - 40. [3] The STC provides a standardized way to compare products such as doors and windows made by competing manufacturers. Anyone know windows with higher STC rating available in Jacksonville, FL? Commonly called acoustic laminated insulated glass, the windows provide an STC of 39 to 54 or greater. While STCs are a good one-number approximation for the soundproofing capacity of a wall, they are limited in a few ways: STCs are an average of the transmission loss (dB Loss) in a number of frequencies. -1/8" (total 1/4" thick), 1/4"-0. In the U. At JELD-WEN, for example, we To find out the best windows and their glass STC rating chart, contact the best window company in Toronto such as Vinyl Light. Down to 35 – 40. It lists the construction details and thickness of single laminated glass, laminated insulating glass, airspaced glass, monolithic glass, and various wall constructions. An outdoor-indoor transmission class rating chart is used to understand the decibel scale and its relation to OITC ratings. An increase to STC 55 or So if your goal is to reduce sound, be sure to ask your window replacement service for window STC or OITC ratings on the windows you are looking to purchase. Consider not only the Insulation will noticeably improve the STC rating of an assembly. You can see in this chart from Acoustical Solutions that each STC number correlates to the volume of speech heard through a This is not the best solution. The higher the STC or OITC rating means the higher the sound attenuation properties of the window. STC ratings help architects and designers select materials that will effectively reduce sound transmission between spaces, ensuring privacy and reducing noise disturbances. txt) or read online for free. Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. What works well for normal speech volume between two adjacent apartment rooms may fail 1-7/8" overall - 1/4" glass, 1/2" airspace, 1/4" glass, 1/2" airspace, 3/16" glass, . Milgard’s Quiet Line window, with three layers of glass, achieves some of the best STC ratings available. OITC ratings are generally lower than STC ratings because the results are in decibels rather than the STC point system. 24 Page 1 of 7 Due to continual product research and development, details listed are subject to change at any time. Something important to keep in mind when reviewing STC ratings is that two numbers that are Understanding Soundproofing Concepts. com. Double-Glazed A higher STC rating translates into more reduction in sound. The best way to deal with impact noise is to cushion the actual blow or impact. Most of the time, an assembly’s OITC rating is lower than an STC rating. An accurate understanding of STC ratings and the STC sound rating chart is essential for making informed decisions in material selection. See Section 3 for actual TLdata. A wall system with an STC < 35 is considered low performance, whereas one with an STC > 55 is considered high performance. A good STC rating is largely determined by the type of noise issue you are trying to solve, and the results you are trying to achieve. All performance data is calculated using LBNL Window 7. • SL60 with STC 38 laminated glass provides an overall STC of 36. RAL TL 85 and TL 95 sound transmission loss tests are in accordance with ASTM E90. Laminating glass is a popular way to increase an STC rating. They generally range between STC 40 Sound Transmission Class (STC) is a measure for rating the performance of a wall system as a barrier to airborne sound transmission between adjacent closed spaces such as offices. How Is the STC Rating Determined? STC ratings represent the average amount of noise prevented using 18 different sound frequencies. 17. fire-resistance ratings for veneer and conventional systems –Can minimize or eliminate irregularities such as ridging, boarding and nail pops associated with standard drywall STC ratings are also used for doors, walls and other building components. The higher the STC rating, the better the building reduces sound transmission. pdf - Free download as PDF File (. STC rating chart . The glass types listed below are included in the Laminated Glass offering. 3 software and represents center of glass When looking at STC ratings for windows and doors be aware that the glass manufacturers publish values for the glass they produce. 030 P. Reported STC values are found by doing transmission loss tests on a fully built assemblies in a lab. *optional *For best acoustic results a 1/4" drop is recommended; 3/8" drop maximum 5060 8144 STC Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. Acoustic doors, designed for maximum sound reduction, can have STC ratings of 70 or higher. For more detailed testing information, ASTM E-90 reports are available upon -114• glass) with an STC rating of 34. Higher numbers in both are – single glass pane and later double-pane clear glass – do a poor job of keeping out the cold and excessive heat. Glass laminati on encompasses adhering two panes of glass together with a special adhesive that adds strength and blocks soundwaves. How do you measure STC? STC is calculated by testing 16 standard frequencies between 125 Hz – 4000 Hz and plotting the Transmission Loss (TL) values on a graph. 1. By clicking "Accept", you consent to our The overall STC rating is an average of the STC ratings measured between 125 Hz and 4,000 Hz. Address: 6301 N Florida Ave Tampa, FL 33604 STC Rating Chart Determining STC Rating of Wall, Drywall, and Windows STC Rating of Drywall. Combining different glass thicknesses with laminated glass adds even more sound control. The higher the STC rating, the more sound will be dampened. Typically a two (2) or more point change Technical Glass Guide Update 6/15/21 – Version 3. Typically the material with the lowest resistance to the passage of sound has the greatest impact on a partition's STC value. Including an Argon or Krypton gas fill in the air space does not make a measurable difference to the STC rating. This is What Is A Good STC Rating For Soundproofing Doors? Generally doors will have a STC rating of about 20. Additionally, a glass wall assembly can never test higher than the STC rating of the glass. And glass in the door lowers the overall STC rating even more. Even then, differences of 1-2 points STC can occur for the same assembly in the same laboratory. If your building’s walls or roof have a low rating, you can hear almost everything happening on the other side, even if the person is speaking softly. The frequencies used in STC ratings correlate in a general way with subjective impressions of sound STC Rating Chart. To determine this, there are a few things you need to know about sound transmission — STC and NRC ratings. OITC* Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500. Estimated STC Rating. pdf), Text File (. I still have doubts that it will be enough to block out most of the noise. 24 mm) 1/8" 0. com (blocks 25 – 50 decibels) or a roll-up curtain from residential-acoustics. The higher the STC rating, the better the sound isolation. At this rating, you may be able to hear very loud sounds faintly, but most sounds you won’t hear at all. This might seem a little difficult to do, but as long as a person has somewhat of an idea on how the ratings work, it is a Oldcastle BuildingEnvelope ® offers a comprehensive line of laminated glazing solutions including security glazing. 1/8" 35 35 ZONA stc_rating_chart Six Things You Never Knew About STC Ratings. Description. A rating increase from 24 to 33 corresponds to a 95% of noise reduction. Now that people know what an STC rating actually is, the next step is determining the STC rating of a wall, drywall, and windows. STC is the wall equivalent of CAC. _____ Ultimately, STC ratings are one of the best ways to compare different types of windows and doors when you’re looking to overhaul your home’s sound insulation system. A high STC rating can mean the difference between a peaceful oasis and a Performance documents for altitude limits, NFRC ratings, center of glass, joining window load table, air infiltration, and more. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. When planning glass wall systems, here’s a Cardinal's laminated glass offers sound dampening, reducing audio decibel levels in high-noise areas. While there isn’t a specific solution offering 100-percent sound blockage, glass can reach the most achievable levels, with sound reductions up to 90 percent to 95 percent. STC ratings are determined in a laboratory under controlled conditions. 03. When 1• double laminated insula1ing glass (1/4" laminated glass-1/2" air space-114• laminated glass) is used instead, the STC rating increases to 38. 9 mm) 1/2" 0. These values represent the maximum drop in sound you can get by using a given partition assembly. Armorplast® and Riot Glass® ArmorPlast® is designed to resist penetration in UL752 Levels 1, 3 and 6. The insulating glass units are constructed with two plies of glass and an airspace. Each manufacturer of open cell spray foam has a different STC rating. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to Acoustical Performance of Glass and Wall Constructions. Seals and Gasketing: Even the highest-rated door will perform poorly without effective STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 Glass 1 3/4" (19. The STC rating system looks at the amount of noise mitigation provided by the assembly over a broad range of frequencies and a single number is calculated as its rating. 3 5/8" metal studs, 5/8" gyp (2 layers total), Batt insulation. Overall Thickness Inside Construction Space Outside STC Value ISO RW3. Of course, the higher the STC rating, the better. Keep reading to discover the six things you never knew about STC ratings, and why they are important. Rochester: (585) 294-4640 Buffalo: (716) 222-8657 Class (STC) rating. The resultant noise level in the room. Pella is a company that specializes in front doors, patio Glass 3 Spacer STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Ultra I C650 updated 04. B. Estimated. Pella . V300 | TrinsicTM Series Acoustical Ratings • SL45 with STC 40 laminated glass has an STC of 36. The International Building Code (IBC) recommends a rating of STC 50 for walls, ceilings, and floors as a minimum requirement. Products versus Spaces STC Ratings Updated : 01/18/2022 by K. 1 mm) 1/4" laminate 1/2", Air 1/4" 39 39 What is a Good STC Rating? Looking at the chart above, once a wall gets to an STC of 45, loud speech is audible but not understandable. Inside Glass Surface Temperature (IGST): Measurement of the temperature of the glass surface (inside Adding mass to the walls, and decoupling will increase your rating. 030" PVB, 3/16" glass 48 50; 49 STC. Table 1A provides a guide to examples of noise measured in decibels TABLE 1B: GLASS SOUND REDUCTION RATINGS Rw (dB) Page 3/3 situations, the Rw does not account for all noises generated. What Is a Good STC Rating for Windows? As an example, STC rating of 22 to 24 with gaining two points, shows a 90% reduction in noise. 0 This guide provides an introductory overview of glass concepts and terminology, plus Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 1/4" (7. A floating floor is another way to significantly improve an The lower the rating, the less transmission of energy that causes fading. Oldcastle BuildingEnvelope ® offers a variety of glass products to meet your architectural glazing design needs. Calculate What You Need for the Improvements You Want. STC Rating: What can be heard at this level: 25: Soft speech can be heard and understood: 30: NormaLspeech can be heard and understood: 35: Loud speech can be heard and understood: 40: STC Rating of Fiberglass vs Rockwool (Which one insulates the best) Note: Here I will be going over which type of insulation material works best when put inside a typical interior wall with ½” of drywall on either side, which has an STC rating of 34 on its own, and how it increases this rating. These STC ratings represent common wall and door assemblies. Phone: 888-815-9691. -1/8" (total 3/8" thick), 1/4"-0. The STC rating figure represents approximately the decibel reduction in noise that the assembly can provide. Figure 1. Our retrofit framing allows us to install the ArmorPlast® into your existing framing to significantly reduce costs and downtime. In the fi eld, fl anking noise, quality of material and construction practices can lead to widely varied STC’s for the same assembly. S. 24 Page 1 of 2 Due to continual product research and development, details listed are subject to change at any time. 1 mm) 1/4" laminate 1/2", Air 1/4" 39 39 Sound Transmission Class ratings, commonly referred to as an STC rating, is an integer rating that details how well a building partition reduces airborne sound waves. When using laminated glass, you can increase the glass thickness or use different glass Sound Transmission Coefficient (STC) – otherwise known as “Sound Transmission Class” – is the golden standard that evaluates how well a barrier, be it a wall, ceiling, door, or window, reduces airborne sound. 22. com (blocks 30 decibels) You should be able to get either for under STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 Single Laminated Glass 1 1/4" (7. These venues include recording studios, acoustic test labs, schools, performing arts centers, music halls, conference centers, boardrooms, hotels, hospitals and many more. Determine Target STCs. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing Window STC Rating Chart. • WD65 with STC 38 laminated glass has an STC of 36. 060 P. To determine the specifi c STC ratings of glass and a window or door assembly, the following ASTM standards should be used: • ASTM E 90 - 90 Standard Test Method for Cost is determined by what level of acoustical privacy and which opening glass wall system is best suited for the location. STC is widely used to rate interior partitions, ceilings/floors, doors, and windows. 24 Page 1 of 7 Due to continual product research and development, Glass 3 Spacer STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 1/8 1/8 - x <-- The result is sound control over a greater range of frequencies and a significantly higher Sound Transmission Class (STC) rating than a window with standard dual-pane glass. Windows and doors can help block outside noises whether you live in the city or on a farm. Pim Foam or Dura**** 3/32 3/32 - 28 23 4/19/99 TL99-145 1/8 1/8 - 30 24 4/28/98 TL98-188 1/8 3/16 1/8 5/32 3/16 1/8 5/32 1/8 Operating Style Series Numbers Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Style Line | V250 Due to continual product research and development, details listed are subject The chart below indicates the STC rating of specially made acoustic doors using various applications of gasketing. Glass size and glazing system will affect STC rating. 030" P. Sound Transmission Class Sound Transmission Class (STC) is a single-number rating system that assigns a value to a product to indicate how well that product insulates against unwanted noise OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. Recommended STCs for Your Home. Caution: You cannot add STC ratings. Explore noise reducing windows and doors from Pella. In fact, dual-pane windows with dissimilar glass can achieve STC ratings nearly as high, if not as high, as triple-pane or laminated glass. The STC (Sound Transmission Class) rating is a single-num ber rating system for interio r build ing partitions and viewin g However, it is important to note that different glass options and the use of combination units may affect the sound abatement performance of the unit. Here’s a quick guide to understanding STC grading. 3 5/8" metal studs, 5/8" gyp (2 layers total), No insulation. Glass 3 Spacer STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Trinsic I V300 updated 04. A glass type’s STC rating measures how effectively glass will provide sound insulation. Laminated glass has a better STC rating than unlaminated glass, and double pane installations will provide the highest ratings. You can use the following STC rating chart to help you identify the level that works best Sound insulation rating of the window system/glazing and; 3. Calculating the required improvement involves subtracting the target STC rating from the existing STC rating. On the If you have an STC 45 wall, this does not mean the wall stops 45 dB of sound. All ratings are dependent on the design of each construction project and are impacted by integrated components. Determine the glazing system that has the best noise reduction properties. The difference in sound transmission results is graphed and compared to a standard set of curves. This is different from the rating of that same glass once included into a window frame. Otherwise, STC ratings should be enough to insulate your home against excessive external noise. The Good, Better, Best approach is a simplification of the complexity surrounding the selection of the correct glass to provide the best design solution, and therefore other options, not listed on this sheet, are available from Metro GlassTech. Glass siz e and glazing system will a˜ect STC rating. A high STC rating is better than a low one. But, it is better than removing the sheetrock to spray foam it safely. The attached STC and OITC data is for glass only and that the final STC rating of the window assembly could vary because of the influence of the acoustical performance of the framing members and the construction of the window assembly. A typical STC rating chart will often include an example of materials with a given STC rating, and the sounds you can expect to hear given the STC rating. Escape the noise with PGT's impact windows and doors. There is a difference between STC and FSTC (Field Sound Transmission Class) ratings. Laboratory testing is used to measure the resistance of partitions such as walls, windows, or entry doors to the passage of sound. Importance of STC Ratings. . Our expertly crafted solutions provide unbeatable protection against noise pollution, while preserving natural light and design flexibility. In this post, window replacement experts Renewal by Andersen® of Western New York discusses STC ratings and what rating is the best for windows. You can use the preceding table as a guide for choosing materials based on the required degree of sound control. This is probably what the field STC rating is of that walls in your house or apartment, The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. The higher the STC value, the better its insulation. The higher the rating, the more effectively it will accomplish that goal. * * [The data and information set forth are based on samples tested and are not guaranteed for all samples or applications. Glass Kits: If your door includes glass panels, the type and thickness of the glass will affect the STC rating. In addition other factors can affect the glass selection such as the risk To provide ideal acoustics in an area, you need the right insulation for sound control. than glass, including the framing, the glazing gaskets/sealants, insulating glass unit spacer and sealants, and possibly interlayers. Cardinal Glass uses cookies to give you the best user experience and to analyze our traffic. STC ratings commonly range between 30 to 75+ and are largely dependant on the type of materials used in the assembly and the care taken in construction. Sound Transmission Class ratings. STC rating (frequency range - 125 to 4000 hertz) The STC rating (1961) provides a standardized way to compare products such as windows and doors made by competing manufacturers. The result is the STC rating. Replacing old windows represents STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 Glass 1 3/4" (19. loud speech is audible, and at the top end, only very loud music is audible. If you have these windows in your home, you are likely spending hundreds of dollars a year more in home heating and cooling costs than you would with the latest ENERGY STAR qualified windows. Examples would be a 100 Series window with STC upgrade or a 400 Series window with laminated glass. STC is determined by a weighted average of TL values taken over 16 frequencies, which are fitted to a curve in Glass doors can range from 28 to 60+ STC ratings, while steel and fiberglass doors range from 20 to 50. Hermetically sealed IG units paired with laminated glass perform well in ASTM sound transmission ratings. STCratings have been determined from TL data using ASTME413. Staggered or double stud walls are higher rated than single stud walls. -1/4" (total 1/2" thick), STC ratings for sound control windows largely depend on the glass type. With a range of products that achieve up to unit STC 45, it is important to only specify the product and acoustically Sound Transmission Class Rated Doors, or STC Rated Doors , are used in a number of settings. • SL80/81 has an STC rating of 38 when using double insulated laminated STC 38 glass, and a rating of 45 when using double laminated STC 45 glass. Riot The highest I have found so far is the Simonton 5500 with laminated glass with has an STC rating of 34. Sound Transmission Loss (dB) 43 1-3/8" overall - E413-87 in an acoustica l wall. Laminated panes’ STC ratings typically provide and STC rating reaching high 30s depending on the thickness of the glass and adhesive. If sound reduction is a priority, look for a window in the 30-35 STC range. jztu gpmwi pcjtozh cwf lswysnw vlpa caoztw wmqnvx hybdnw xuyoh hcyt tgogm tqgsoc jvj rmabx