Cardinal glass stc ratings. The higher the STC rating, the more sound will be dampened.
- Cardinal glass stc ratings The STC rating goes all the way up to 65. From the melting of sand to produce clear float glass to the vacuum sputtering of silver to produce low-emissivity coatings, Cardinal manufactures the quality components and finished. 77 Prairie Center Drie Eden Prairie N 3 ENGINEERING THE FUTURE OF GLASS www. 13. A laminated glass increases a window’s STC rating – the higher the rating, the greater the sound dampening. It just might make all other low-e glass obsolete. 4 %âãÏÓ 1107 0 obj > endobj xref 1107 24 0000000016 00000 n 0000001789 00000 n 0000001952 00000 n 0000004835 00000 n 0000005232 00000 n 0000005347 00000 n 0000005671 00000 n 0000006078 00000 n 0000006903 00000 n 0000007753 00000 n 0000008539 00000 n 0000009340 00000 n 0000010148 00000 n 0000010897 00000 n 0000011792 00000 n 0000012529 00000 n 0000014062 00000 n 0000015281 00000 n TECHNOLOGY OF ENERGY-EFFICIENT WINDOWS. % 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. 2021 By Garibaldi Glass Cardinal 366 - Guardian SNX 62/27 - Viracon VNE-63 - Vitro Solarban 70 Make-up Name STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Thickness Inside Construction Space Outside STC Value ISO RW 3 Single Laminated Glass 1 1 Cardinal Industries supplies Quaker with several types of Low-E glass, tinted glass, privacy glass and other specialty glass. AGC Glass Configurator Single & Laminated Glass Data. Acoustical Guide – Determining Minimum STC Rating Figure 1. Call: (360) 334-4107 Dec 22, 2022 · Double-glazed glass can also provide an STC rating of up to 40. Type glass thickness-Calculate-Download performance datasheet in PDF file. . GLASS CARDINAL LAMINATED GLASS Enhanced UV Protection GLASS MAKE-UP 6mm Cardinal 272 LoE Surface #2 ½” Dual Seal Black Warm Edge Spacer Argon 90% / Air 10% 6mm Clear All specifications below are center-of-glass (CoG) values and do not take into account framing systems. Jump in panel or hinged panel options which aid in acoustic ratings and can get STC values in mid to high 40's. Intercept or Cardinal-- - Operating Style Series Number Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Aluminum | A150 Due to continual product research and development, details listed are subject to change at any time. OITC, on the other hand, covers a broader frequency range (80 to 4000 Hz), including lower frequencies often associated with external noise. V400 | Tuscany® Series Acoustical Ratings rigid non-rigid Intercept / Cardinal Foam / 4SG / Dura**** Glass 3 Spacer STC OITC Test Date Number Operating OITC* Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 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. Topics include: Download PDF Document Cardinal's laminated glass offers sound dampening, reducing audio decibel levels in high-noise areas. 0 requirements. Sound Transmission Class ratings. Cardinal's LoĒ-i89™ glass offers excellent light transmittance and low reflectance while maintaining low U-factor of 0. comtransmission. com Center-of-Glass Performance LBNL Window 7 er NFRC00 conditions. Stc rating of laminated glass 03" interlayer, 1/8" glass 3 6 Same as above but with 0. 090 SGPPET w/ tabs ® PVB GLASS GLASS GLASS GLASS GLASS GLASS • For small units (up to 15 ft2) • Tabs help keep glass in frame • Maximum width 60 The American Society for Testing and Materials (ASTM) developed the sound transmission class rating (STC) to describe the sound isolation performance of materials. Cardinal Industries supplies Quaker with several types of Low-E glass, tinted glass, privacy glass and other specialty glass. Page 1 of 6 PERFORMANCE CALCULATOR 26. Whether you are trying to decorate an office or conference room door, front door of your home, or an exterior bathroom window, we have the right obscure glass for you. Is Complete Soundproofing Possible? Our STC rating chart above only goes to 50 because STC rated windows are in that range. The Disadvantages of Cardinal Glass in Replacement Windows . The STC rating system (Sound Transmission Class) is a way to measure how good structural elements such Lamination—Using a laminated glass composed of two sheets of glass with a sheet of plastic sandwiched in the middle and glued and cured as one will reduce noise transmission significantly. introduces the ultimate performance glass, LoĒ³-366 ®, and comes standard in all Premium Windows products. cardinalcor. E413-87 in an acoustica l wall. - Design consistency - Performance up to STC 50 - Numerous glass thickness configurations - Narrow profile: 3 1/4” The definitions of two ratings: Sound Transmission Class or STC and Outdoor-Indoor Transmission Class or OITC; The project’s design requirements and how they impact the glazing system, and; How to calculate an STC or OITC rating; STC versus OITC. This glass package combines asymmetric laminated glass and dissimilar thickness glass within a 1” dual pane insulated glass unit to achieve improved sound performance. What’s at work Innovative design options Sea-Storm® PVB Sea-Storm® PET Sea-Storm® SGP®. Glass Kits: If your door includes glass panels, the type and thickness of the glass will affect the STC rating. STC Rating Chart For Windows. Glass Glossary A quick and easy-to-use glossary containing many glass and window industry terms. It’s also the one glass you can use to be compliant in every ENERGY STAR zone glass constructions only. Cardinal Loå2-272 glass (pro-nounced low E squared 272) delivers year-round comfort, whether it’s 20 below or 110 in the shade. Costing more than other materials, this is used mainly for exterior applications. Enhanced protection against windborne debris, passes rigorous county building codes & TAS/ASTM testing protocols. Securing a higher STC rating than this is possible but impractical because it is more expensive and sound can enter through lower-performing parts of the home such as the exterior walls. At Cardinal, we design and fabricate the most advanced glass products in the industry. Jul 30, 2024 · The Outdoor-Indoor Transmission Class (OITC) rating, calculated according to ASTM E1332, measures the capacity of a window or door to reduce the transmission of exterior noise to the interior of a building across the frequency range of 80 to 4000 HZ. Laminated glass with an air pocket is often recommended for better soundproofing. 40 GLASS MAKE-UP 6mm Cardinal 366 LoE Surface #2 ½” Dual Seal Black Warm Edge Spacer Argon 90% / Air 10% 6mm Clear All specifications below are center-of-glass (CoG) values and do not take into account framing systems. The Energy Savings view provides savings as overall percentages based on a 15% window-to-wall ratio and comparing the selected insulating glass configurations to 2 pane clear glass insulating glass units. We invest in the latest technology to give our customers the best product, always. 1/4” Mono Glass 31 STC 29 OITC 7. Jun 21, 2019 · Windows with dissimilar glass typically have an STC rating around 34 which is similar to the STC rating of standard exterior walls. Jul 30, 2024 · Insulating Glass (IG) Units: IG units are composed of multiple panes of glass separated by a spacer and sealed to create a single unit with an air or gas-filled space in between. (3) Comfort Indoor Glass Temperatures are for the center portion of the glass. Outperforms tinted glass. On my southern facing windows, I had ordered triple pane, argon with high solar heat gain. May 14, 2021 · It is hard for us to know how much DB noise has been blocked during transmission. A STC requirement of 35 is common for construction near airports – therefore a STC rating of 35 or greater would qualify. 090 PVB . Windows. Protect your home from hurricanes with Cardinal's Sea-Storm® laminated glass. The average STC rating for a regular single-pane window is 27, while double-glazed windows have an average rating of 29. While STC and OITC ratings are published for various glass configurations, accurate ratings for the Oct 14, 2014 · Sound ratings were developed by the American Architectural Manufacturers Association (AAMA) and the American Society for Testing and Materials (ASTM) to standardize the testing and rating of sound transmission for building components, particularly windows. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. View All Windows By Material Vinyl Windows Wood Windows Aluminum Oct 10, 2024 · If the window has an STC rating of 30, the final STC with the addition of the blanket is not 65. Jul 5, 2023 · Thinner glass has a low STC rating because sound travels through it easily. Unlike other fenestration value requirements, higher glass STC ratings indicated higher performing products. For instance, in residential buildings located in noisy urban environments, selecting glass with a higher STC rating can significantly improve occupant comfort by reducing insulating glass units. Beyond the type of windows you select, other factors can affect the STC rating of your glass. Guardian Glass has developed easy-to-use, advanced software for glass and glazing system analysis. When ordering, I had asked who was the glass supplier, and we had chosen the 1-3/8" cardinal 180/clear/180 glass. ) 2 days ago · The sash has a UV-resistant PVC outer layer and a glass-fiber reinforced PVC inner core, offering U-values down to 0. Glass 3 Spacer STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Trinsic I V300 updated 11. 24 Page 1 of 2 Due to continual product research and development, details listed are subject to change at any time Sep 30, 2021 · In fact, most window manufacturers get their glass from Cardinal Glass. Theoretically, STC ratings have no upper limit in range; however, logically there are some limitations. Available exclusively from Cardinal -- the industry's leading glass manufacturer with a 60-year history of continuous innovation. It’s important also to consider: Glass thickness: thicker glass typically provides better sound insulation than does thinner glass LoE2272 Glass | Cardinal Glass Industries 3/4 Note: All values calculated using Window 6. 24 Page 1 of 2 Due to continual product research and development, details listed are subject to change at any time Jan 18, 2022 · Intercept or Cardinal horizontal slider 6110 6111 6130 6130J 6170 size tested 6040---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 to change at any time. By clicking "Accept", you consent to our use of cookies. Combined with its double-pane window glass, you can save a substantial amount of money on energy costs with SoftLite. 817-860-9767. %PDF-1. 2021 By Garibaldi Glass Cardinal 270 - Cardinal 272 - Guardian SN 68 - Viracon VE-2M - Vitro Solarban 60 In addition, when the laminated glass makeup includes a coating facing the interlayer material, there may be a loss of Intercept or Cardinal horizontal slider 8120 8130 8170 size tested 6040-- - Operating Style Series Numbers Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Tuscany | V400 Due to continual product research and development, details listed are subject to change at any time. They look great. This got us thinking about making the investment and doing full replacement. Intercept or Cardinal X X <--Operating Style Series Numbers Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Trinsic | V300 Due to continual product research and development, details listed are subject to change at any time. Keeps the view while beating the heat. In addition, proper installation is critical to ensure that sound does not enter through poorly fitted components. Laminated and double-glazed glass both hold STC ratings of 40, but anything higher typically requires a combination of the two. Made to meet ENERGY STAR 7. In addition, SoftLite windows can have a Low-E tint on the glass, which further insulates the home and reflects heat away from it during hot temperatures. Cardinal Glass Industries Inc. Cardinal Glass Industries, Inc. (See here and here for more information on glass optical data and the Windows 6. V. ProVia provides energy-efficient windows that best meet the weather conditions in your area. It even outperforms tinted glass often used in warm climates. 17. 14, STC ratings up to 42 dB, OITC 34 and structural NAFS ratings up to CW-PG100. Glass 3 Spacer STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Style Line I V250 updated 04. * Aug 15, 2023 · Moreover, Cardinal Glass can be customized to fit various styles and architectural designs, ensuring that it complements your home's overall look. This design helps to reduce heat transfer through the window, which in turn lowers the risk of condensation forming on the room-side surface of the glass. 18 SHGC) Accepts glass packages that can achieve Sound Transmission Class ratings (STC) ranging from 30-35 Our system can fit a second pane of glass at any time, and be installed next to a Single Glass Module while maintaining an unchanged aesthetic. Jun 15, 2024 · STC Ratings for Windows and Glass. To determine the specific STC ratings of glass and a Intercept or Cardinal-- - Operating Style Series Number Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Aluminum | A150 Due to continual product research and development, details listed are subject to change at any time. Fortunately, there are some tools we can use when we choosing the suitable glass types we need. Intercept or Cardinal horizontal slider 6110 6111 6130 6130J 6170 size tested 6040---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 to change at any time. We trust they provide the best quality glass for our customers. Menu. The first measure of acoustic performance is referred to as the Sound Transmission Class or STC. The specs of the glass are SHGC 0. It uses decibel (db) levels measured between frequencies of 125 Hz and 4,000 Hz. The higher the STC rating, the better resistance to sound www. Cardinal CG Company - cardinalcorp. Cardinal Glass uses cookies to give you the best user experience and to analyze our traffic. 56, U-value 0. Cost Considerations. 20 in 2-pane units. Inside Glass Surface Temperature (IGST): Measurement of the temperature of the glass surface (inside Cardinal Glass Industries, Inc. From their off ering, we have developed our own energy-effi cient family of glazing packages. Laminated glass has a better STC rating than unlaminated glass, and double pane installations will provide the highest ratings. 2021 By Garibaldi Glass Cardinal 270 - Cardinal 272 - Guardian SN 68 - Viracon VE-2M - Vitro Solarban 60 A leader in tools for the glass industry. Laminated glass increases the STC rating of a window, diminishing unwanted outside noises. While Cardinal Glass offers numerous benefits, it tends to be more expensive compared to standard glass options. 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 Generally, yes. Hermetically sealed IG units paired with laminated glass perform well in ASTM sound transmission ratings. Testing from Cardinal Glass has found that increasing glass thickness from 3 mm to 6 mm can increase the window’s acoustical glass rating by four to six points, an improvement that will be clearly audible to any homeowner. Cardinal LoĒ² glass is ideal for all weather conditions in most climates. Sound transmission class. 27 May 13, 2024 · The lower the rating, the less transmission of energy that causes fading. Neat+™ Glass is offered with Preserve™ as standard to protect the Neat+™ surface. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. A higher STC rating indicates a greater sound dampening effect. The final STC/OITC rating of the window assembly could vary because of the influence of the framing members and the construction of the window assembly. This performance data is not a commitment for Cardinal to produce. Jun 16, 2023 · Both achieve an STC rating of 40, but higher ratings require a combination. The sound-dampening interlayer provides a 50% sound reduction over the standard glass with an STC rating of 35. Oct 16, 2023 · STC 29-34 X X <--32 Operating Style Series Numbers Glass 1 Glass 2 Spacer STC TL22-271 28 12/14/22 TL22-270 acoustical ratings not available for this File Name: Acoustical Ratings - V150 Due to continual product research and development, details listed are subject to change at any time. What is LoĒ³-366 ®?. 18 SHGC) Accepts glass packages that can achieve Sound Transmission Class ratings (STC) ranging from 30-35 Operating Style Series Numbers Glass 1 Glass 2 Spacer STC 33 27 4/22/99 TL99-170 - - 33 28 4/22/99 TL99-168 - - 35 28 10/30/99 TL98-378 tested not tested not TL99-169 not tested - - 36 29 4/22/99 File Name: STC Ratings - Ultra | C650 Due to continual product research and development, details listed are subject to change at any time. We worry about the details while you enjoy the views. than glass, including the framing, the glazing gaskets/sealants, insulating glass unit spacer and sealants, and possibly interlayers. Sound Transmission Class (STC) - The STC rating is a single number value quantifying the ability of a material to resist the transmission of sound. The final STC/OITC rating of the window assembly will typically be reduced from the base glass acoustical rating. Cardinal 366/Clear U-Value – Imperial / Metric 0. Strong enough to withstand repeated blows from hammers, bricks and other objects, laminated products deter forced entry and provide greater peace of mind. Glass siz e and glazing system will a˜ect STC rating. 24 Page 1 of 2 Due to continual product research and development, details listed are subject to change at any time Location 6601 NE 112th Court Vancouver, WA 98662. Loå³-366 delivers the ideal balance of solar control and high visibility. (2) Calculations based on 13 mm (1/2") airspace, 3 mm (1/8") glass, and 90% Argon gas fill level. These “soundproof windows” have STC ratings between 45 CLiC™ is the breakthrough you've been waiting for. In the private mode, the CLiC™ glass panel displays a uniform appearance from edge to edge. 3 program. *OITC is estimate d base d on this test. Intercept or Cardinal horizontal slider 8120 8130 8170 size tested 6040-- - Operating Style Series Numbers Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Tuscany This information assumes that the IG unit is configured with an energy-efficient window frame and is properly installed. Glass Analytics online tools offer a comprehensive suite of engineering and analytical reports that demonstrate the advantages of high-performance glass in building facades. In summer, its patented coating blocks around 85% of the sun’s harmful ultraviolet rays and 60% of the sun’s heat. - Greenland can be contacted via phone at 423-357-2400 for pricing, hours and directions. Page 1 of 5 PERFORMANCE CALCULATOR 26. High STC rated windows are designed to minimize sound transmission by incorporating multiple layers of glass, specialized framing, and insulating materials that reduce noise from the outside. Compared to single-pane windows Single-pane windows have an average STC rating of 27; some double-pane windows and triple-pane windows have STC ratings that can go up to 32. For glazing that is installed within a building interior, the Sound Transmission Class (STC) rating may be a more appropriate measure, as it describes the approximate decibel level reduction for the sound of human speech. You would have to do more serious calculations to find the right answer, or test the blanket + window assembly, but essentially you just need to know these two things: The STC rating of a soundproofing product is the rating of the product alone. Cardinal Glass Industries is considered one of the world’s leading providers of superior quality glass products. The technology in the windows includes the vinyl compound, the frame design, and specialized glass system that combines low-E and clear glass with an insulating gas, like argon or krypton. Cardinal employs multiple interlayers to meet various size and security constraints. (4) The UV Transmittance is determined as an average for wavelengths 310 -380 nm. CLiC™ glass is a complete privacy solution. Burris Windows offers many styles of obscure glass, which can be used to decoratively separate spaces, yet allow light to pass through. 21. By comparison, a ¼” laminated glass has an STC rating of ~34 dB. STC OITC Test Date Test Number Intercept or Cardinal horizontal slider 8120 8130 8170 size tested 6040-7/8" - Operating Style Series Numbers Glass 1 Glass 2 OA Spacer File Name: Acoustical Ratings - Tuscany | V400 Due to continual product research and development, details listed are subject to change at any time. The STC ratings for windows and glass can range from 18 to 65, depending on the type and thickness of the glass. com ©2024 Cardinal CG Company - Ref number 02072024 Contact Cardinal CG to learn more about LoĒ³-366 and other Cardinal glass products. 37 SHGCc - Solar Heat Gain Coefficient 0. Jan 22, 2025 · This upgrade alone can save you hundreds of dollars yearly in energy bills. 24 / 1. Th e most popular being: Our glass off erings are not limited to the glazing packages above. Argon fill is 90% and air fill is 100%. For most homes, glass thickness exceeding 6 mm thick is unnecessary and may distort the quality of your view. Jump to Letter: A B C Best in Industry Cardinal Glass. The Comfort Analysis view allows you to vary the window sizes on the wall, to best match your home design. Dec 31, 2024 · Gaps or weaknesses in the frame can compromise the STC rating. Connect the LoĒ coated glass on the left with the correct climate zone column. 42 SHGCc - Solar Heat Gain Coefficient 0. 0 Acoustic PVB 36 STC 32 OITC 2 Pane 3/4” Annealed IG 31 STC 26 OITC. How well materials block sound is measured by sound transmission class (STC). C650 | UltraTM Series Acoustical Ratings Intercept or Cardinal Foam or Dura**** Glass 3 Spacer STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 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. - Greenland is located at 700 Cardinal Way Road in Church Hill, Tennessee 37642. Examples here use 3mm glass with a stainless steel spacer and argon gas fill. Cardinal 272/Clear U-Value – Imperial / Metric 0. Mass pigmented and decorative interlayers can also be used to provide a wide range of effects. Neat+™ Glass is an ultra smooth surface made from silicon dioxide that harnesses UV rays to loosen dirt. Factors That Affect Your Glass STC Rating. 25 / 1. To achieve these higher window ratings, a manufacturer uses thicker glass, increases the air space between the panes, and uses laminated glass. Premium Cardinal Dual-Sealed Insulated Glass Units with stainless steel warm-edge spacer system provides superior energy efficiency (thermal performance as low as a . Cardinal's LoĒ³-366 glass is the new standard in energy efficiency. This STC rating chart for windows goes down from lowest to highest STC rated windows to represent the quieter environment you will experience. Mar 22, 2024 · Understanding the STC rating of glass is crucial for architects, builders, and designers when selecting glass products for projects where sound insulation is a priority. In winter, Lo January 2020 Vitro® Architectural Glass (PPG) AGC Glass Guardian® Glass Cardinal® Glass Viracon® Saint‐Gobain NSG (Pilkington) Sungate® 400 ENERGY Select® 73 Plus SunGuard® Neutral 78/65 LoE‐180™ VE1‐85 Planitherm HNII Energy Advantage™ Aug 3, 2018 · I just took delivery of my windows, and they were installed. Laminated & Double-Glaze Combinations. The STC (Sound Transmission Class) rating is a single-num ber rating system for interio r build ing partitions and viewin g windows used to catego rize acoustic performanc e. May 30, 2024 · STC is a widely recognized measure for sound insulation in windows and doors, focusing on human speech frequencies. When planning glass wall systems, here’s a Windows significantly impact Sound Transmission Class (STC) ratings because they can either enhance or diminish the overall sound insulation of a building. 23 u- value and a . ASTM E413 is the classification for rating sound insulation. Cardinal Glass Industries is leading the industry in the development of residential glass for windows and doors. 1. However, soundproof windows can have an STC rating of 48-54 or higher The glass we like is the Cardinal 340 and he quoted us $11,300 to change out every window and we have over 40 windows; some of those are half moon. 3. This guide provides an introductory overview of glass concepts and terminology, plus technical information on Cardinal glass products for both windows and doors. Both STC and OITC ratings inform your window or door selection based on sound insulation Values are center of glass calculated using LBNL Window 7 per NFRC100 conditions. Laminated architectural glass can be fabricated using various glass types, including low-e, clear, low-iron, tinted, reflective, patterned or wired glass to achieve desired aesthetics or to improve solar control and thermal performance. Laminated glass provides security for both homes and businesses. Read more about the tools below Video Gallery Cardinal Technology Overview Float Glass Technologies Laminated Glass Technologies Coated Glass Technologies Insulating Glass Technologies Product Insights: Tempered Wider air space – The air space between the glass panels in an change in the STC rating can make a big difference. Neat+™ Glass helps leave windows spotless with a quick rinse of water and preserves their cleanliness longer. After sealed IG units were installed into the laboratory test opening, the first glass panel and wood spacers were used to complete the triple glass configurations. November. And it provides the highest levels of year-round comfort and energy savings. Seals and Gasketing: Even the highest-rated door will perform poorly without effective STC Example : ¼” Monolithic glass has an STC of ~31dB. Actual values may vary due to production tolerances. cardinalcorp. Cardinal Loå³-366® glass is the ultimate performance glass. Single hung and picture windows are now available with a glass package that achieves an STC 35, while sliding windows achieve an STC 34. This resilient impact-resistant laminated glass guards against hurricane-force winds and windborne debris while providing everyday benefits that enhance your life. Its original intent was to quantify interior building partitions not exterior wall components. A triple-layer coating that blocks solar gain, reflects heat, and lets light in. (5) UV Damage Weighted Transmittance (Tdw) is the weighted average for wavelengths 300 - 700 nm (based on CIE 89/3). Intercept or Cardinal - - Operating Style Series Numbers Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Thermalbreak| A250 Due to continual product research and development, details listed are subject to change at any time. The higher the STC rating, the more sound will be dampened. jbozqm zeiqpn exwx ior ngqpp yagy wlt wgfojwb lwosp bukeb nldc szrzr hanyck bcg vqgw