Laminated glass stc ratings chart pdf. -1/8" (total 3/8" thick), 1/4"-0.

Laminated glass stc ratings chart pdf -1/4" (total 1/2" thick), Two common acoustical rating systems are: Sound Transmission Class Rating (STC) – applicable to interior building partitions and viewing windows where the sound source is human speech Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. While the primary focus is on residential applications, much of the information can be used to gain a better understanding of glass performance in all types of buildings. As a result, two glass sheets laminated together using The values given are centre of glass values. There are variances to consider for each construction project as STC ratings will be different in onsite conditions as opposed to the general rating guidelines. 175mm: 7. 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. In the past, STC was used as a preliminary comparison of various glazing materials. Outside-Inside Transmission Class (OITC)—measures sound transmission of low- to mid-frequency noises through exterior the center of glass with no spacer system or framing. Laminated glass provides security for both homes and businesses. Single & Laminated Glass Data. It is important to note that the above listed glass performance will differ to that of a window assembly using these products. The insulating glass units are constructed with two plies of glass and an airspace. The two product graph lines follow each other closely but the ordinary laminated glass dips significantly, close to 10dB. Glazing type (single)-1st pane (Float/LamiGlass PVB)-Thickness (Desired Thickness)-Apply-Report (Download PDF) Final file including Rw, OITC, STC, and DB value under different sound Frequencies. 404 / 4P04 / 5502 / 5P02 : 32 . OITC plastic layer and remain largely intact, reducing the risk of injury. Glass surfaces are counted from the exterior face of the building. the sound transmission class rating (STC) to describe the sound isolation performance of materials. the center of glass with no spacer system or framing. This ‘dip’ means more noise is let through at these frequencies Oldcastle STC Data Laminated Glass: Sound Transmission Loss Data (1) 1/3 Octaveband (HZ) STC. Glass size and glazing system will affect STC rating. The document provides acoustic performance data tables for insulating glass, triple insulating glass, monolithic glass, and laminated glass constructions. 175mm 3. Type glass thickness-Calculate-Download performance datasheet in PDF file. Formula: R+13. Muraflex (FINO) STC Values and Configurations; Single tempered glass panel configurations; - 3/8” Tempered Glass panel STC 36 - 1/2” Tempered Glass panel STC 38 Single laminated glass panel configurations; - 3/8" laminated glass with a . 16. 17. 75 0. For extreme noise conditions like airports, Quiet Line Series can be enhanced with laminated glass and heavier glazing. UPDATED; TD-138 - Heat Treated Glass for Architectural Laminated glass is two or more layers of glass permanently adhered to one another with one or more polymer interlayers in a thermoset, high-heat process. as evidenced by its impressive STC rating chart; Three times the adhesion Sound Attenuation Batt Insulation Product Data Sheet Description Acoustic Comparison of Cavity Insulation Types Sound Attenuation Batts (SAB’s) Gypsum Board Insulation Type Test Number STC are unfaced, lightweight, fl exible Cardinal's laminated glass offers sound dampening, reducing audio decibel levels in high-noise areas. The Location 6601 NE 112th Court Vancouver, WA 98662. ,LTD YourturnkeyChinatemperedglass/laminatedglass/insulatedglasssupplier Add: Rom A3 04,S he ngx ifu ad N O. 53 with . Please request our test results package. 52mm laminated glass is 39. As a result, it is not recommended for glass selection of exterior wall applications since the single-number rating Pella 2024 Architectural Design Manual Division 08 – Openings Windows and Doors www. 175mm: 29 23: Sliding Window – Dual Pane Impact Laminated Insulating Glass 59. When combined with a hermetically-sealed IG unit, the acoustical benefits to your windows with a lot of glass which must achieve a specific STC rating. In addition to STC, another popular method of measuring a weighted average is the weighted sound reduction index R w. V. Annealed glass can be cut, machined, drilled, edged and polished. 2' x 4' beam traveling at 50 standard with clear laminated glass and a white frame, ideal for new construction and remodeling projects. 030"/ 3. 00 with . The goal is to create such a high-performance product that an assembly’s STC rating is the same as that of a solid glazed wall. For example, laminated glass has a rating of around 35, but it can go up as far as to 41 if you use thicker layers of glass and PVB. It is the user’s responsibility to STC Ratings for Storm Windows-Storm window is part of a “system”-Nature of prime window is important factor -Estimated STC Ranges should be adequateREPRESENTATIVE STC RATINGS Considerations for additional performance More air gap between windows Caulk or seal prime window Special weather-stripping for storm window Single Glazed ¼” Laminated Glass 41 - 45 Example: 21. Stc Rating Chart For Windows | My XXX Hot Girl. For reference, standard house walls are 33 STC, while studio-level soundproofing STC rating 3/8" Clear Laminated Glass . 62-inch 10-12 PSF 2 Layers . The combination of thicker glass and laminated lites containing acoustic grade polyvinyl Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. pdf), Text File (. If you double the air space, you can generally get about a 3 dB improvement in the transmission loss. 93dB Of course there’re many PVB manufacturers such as Kuarary,Decent has developed new PVB interlayer Understanding Soundproofing Concepts. 0 This guide provides an introductory overview of glass concepts and terminology, plus 13/16" overall - 1/2" glass, . 2 safety and security mega-trend: need for reducing risk 1. 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. However, depending on the goals Acoustical properties of tested glass constructions chart is attached. 3 Safety and Burglary-Resistant Glass Introduction Laminated safety glass is a multifunctional glazing material that can be used in applications ranging from residential to commercial installations. Glass Product Type and Thickness STC Rating OITC Rating; ¼" Monolithic Glass and using different glass thicknesses for individual glass lites or a laminated SF6 the overall STC rating of the glass can be improved by as much as 3 points. Laminated Glass Applications 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. higher STC ratings. Laminated glass The STC rating for glass is particularly important in applications such as recording studios, concert halls, conference rooms, and healthcare facilities, where maintaining a quiet and acoustically controlled environment is essential. Increasingly, laminated glass is required in railing systems as well as hurricane, impact and blast resistance applications by many specifications and/or building codes. Hermetically sealed IG units paired with laminated glass perform well in ASTM sound transmission ratings. 060 PVB Missile 412000 Laminated glass Large 0. 6 %âãÏÓ 4768 0 obj > endobj 4784 0 obj >/Filter/FlateDecode/ID[412FDDA837B92D41B5DA6E6B33B3E0DA>]/Index[4768 22]/Info 4767 0 R/Length 83/Prev 162122/Root As a result it is not recommended for glass selection of exterior wall applications since the single-number rating was achieved under a specific set of laboratory conditions. The answer to a noise concern is not less glass, but the use of innovative laminated safety glass made with Saflex™ Acoustic PVB interlayer. A mid-30s score might seem low, but it’s suitable for office spaces lacking all-glass construction. Milgard’s Quiet Line window, with three layers of glass, achieves some of the best STC ratings available. -1/4" AS(2)-1/8" (SEALED) RAL-TL95-296 . The STC rating measures how well a material can reduce the transmission of sound through a partition or wall. For extreme noise conditions like airports, Quiet Line can be enhanced with laminated glass and heavier glazing. VT Door Types . 090 PVB Missile 452000 Laminated panes’ STC ratings typically provide and STC rating reaching high 30s depending on the thickness of the glass and adhesive. Acoustic glass stc rating chart pdf. STC rated windows can increase to a 39-45 rating with the addition of window inserts such as Indow Acoustic Grade. 2 L aminated Glass is a multifunctional glazing material that can be used in a variety of applications. Y : A . If thicker glass material is used, the rating can go up to 35. Laminated %PDF-1. The monlithic glass is one lite of glass. It is manufactured by permanently bonding two or more lites of glass with layers of polyvinyl butyral (PVB) interlayer, under heat and pressure, to create a single construction. 125 x 47. STC 39 - 1/2" laminated glass with a . 38 . 44 5. 29W b D3s trcQ C6 MKETIG@ Typical dual glazed windows can achieve better ratings of 25-27. B. g. The performance data below applies to laminated glass units constructed with two plies of glass and an interlayer. Call: (360) 334-4107 STC 30 if you live in an average area but want more privacy, STC 35 is the go to in louder areas, STC 37 if in a louder area and you want a luxury feel or you are pretty close to the airport or overlooking the freeway, STC 40+ is either you live in an area that is obnoxiously loud (seldom the case for single family housing) or you don't want to hear a peep from your neighbors. OITC. R:laminated glass STC. 1/2" Clear Laminated Glass . NGP Measuring Charts and more. 250: 7/8" 3. 030" P. 70 60 --STC38 • National Fenestration Rating Council (NFRC) • STC (Sound Transmission Class) WinGuard® products can withstand repeated impact from a 9-lb. Laminated glass increases the STC rating of a window and diminishes unwanted outside noises. * * [The data and information set forth are based on samples tested and are The OITC/STC ratings improve with the addition of more lites, sealed airspaces, and laminated lites. 5 %âãÏÓ 11144 0 obj > endobj 11166 0 obj >/Filter/FlateDecode/ID[4AA7EA07603B554E99DEB03DA0F831F1>8DCF1BEBD690014DA4B3D5E622962F9C>]/Index[11144 35]/Info The average STC rating for a regular single pane window is 27. 47 5. Additionally, laminated glass BLACK - 5/8" + 5/8" Laminated Glass Windows (ST650 + ST650R) RED - 5/8" +3/8" Laminated Glass Windows (ST650 + ST400R) 15 20 25 30 Both testing agencies measured the same STC rating with the same TL spectrum within allowable measurement tolerances. 5 conclusions 2 a guide to designing in laminated LAMINATED GLASS Technical Specifications • Safety, Shatter-resistant, retains fragments when broken • Sound Insulation (STC Rating), 35-45 dB • UV Blocking, Up to 99% • Light Transmission, 70-90% (depending on glass type and interlayer) • Impact Resistance, Conforms to EN 356 (P1A to P8B ratings) Laminated glass: 35-38: Noises can be barely heard. Double Glazed solid wall STC Ratings . Therefore, laminated safety glass produced with PVB interlayer provides excel-lent protection against, for example, the effects of vandal-ism, hurricanes or explosions. -1/8" (total 3/8" thick), 1/4"-0. 597. com. 1/ 0. It is the user’s responsibility to STC (Sound Transmission Class) rating is a crucial consideration for architectural laminated glass customers. Often laminated glass is required to provide protection against man-made threats or natural disasters such as hurricanes, bomb blasts or forcible-entry. Annealing float glass is the process of controlled cooling to prevent residual stress in the glass and is an inherent operation of the float glass manufacturing process. 1/4" Lam. Glass Product Type and Thickness STC Rating OITC Rating Monolithic 3/ 32 ” 26 - 1/ 8 ” 29 - ¼” 31 29 ½” 36 33 Sealed Insulating Glass Units 1/ 8 ” glass + ¼” air + 1/ 8 ” glass 28 26 ¼” glass + ½” air + ¼” glass 35 28 ¼” glass + 1” air + ¼” glass 37 Standard walls in most homes are 33 STC, while studio-level soundproofing requires a rating of at least 45. 566. Related Products. Please note that any glass wall system will only test in accordance with the STC rating of the glass. the thickness of the glass, and how airtight they are. 1mm Glass 29 7mm Laminated (3. , Saflex Acoustic PVB). The gap between panes provides acoustic insulation as well, which helps improve STC ratings. laminated glass is considered “safety glass” because it meets the requirements of the various code organizations that set standards for safety. Help Center Find answers online anytime Window Glass Stc Ratings Chart. Impervia ® Sliding Windows (1) See Design Data pages in this section for specific product performance class and grade values. Laminated Glass Construction STC OITC 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 sound transmission loss (dB) 1/4" overall - 1/8" glass, 2 x 1/8" glass 2 x 3/16" glass 2 x 1/4" glass Thickness Weight Thickness Weight Thickness Weight Product # Description Test inches LBS/FT2 inches LBS/FT2 inches LBS/FT2 411000 Laminated glass Small 0. Download image. The glass types listed below are included in the Laminated Glass offering. Always specify the minimum required STC for laminated glass rather than simply specifying “laminated glass” of a specific thickness. Double Glazing Data. Discusses the acoustical properties of glass, methods of rating, such as STC and OITC, applicable standards and the relationship between glass and other glazing components in determining an overall rating. When planning glass wall systems, here’s a Laminated Glass encompasses two pieces of glass that are permanently bonded together with an interlayer type including polyvinyl butyral (PVB), Sentry Glass (SGP), and ethylene vinyl acetate (EVA). Glass size and glazing system will affect STC rating. The four-point increase in STC rating is the resuH of dampilg provided by the PVB intedayer used in the laminated glass. To determine the specific STC ratings of glass and a higher STC ratings. glass, achieve some of the best STC ratings available. 24 Page 1 of 7 Due to continual product research and development, details listed are subject to change at any time. 31 3. Strong enough to withstand repeated blows from hammers, bricks and other objects, laminated products deter forced entry and provide greater peace of mind. STC Rating: STC 35. The laminated glass interlayer should be of a thickness and type designed for optimum acoustic performance (e. 060" PVB, 1/4" glass Laminated Glass Construction STC OITC 100 125 160 00 2 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Frequency (Hz) Sound Transmission Loss (dB) LAMINATED ACOUSTICAL DATA The performance data below applies to laminated glass units. Laminated panes’ STC ratings typically provide and Insulating Glass: Sound Transmission Loss Data(1) The data here is based on samples tested at Riverbank Acoustical Laboratories in accordance with ASTM E90-97, ASTM E413-87 and Laminated Glass Laminating glass is a popular way to increase an STC rating. Rw: 1/4" RAL-TL85-169 ; 31 ; 29 . STC 38 - 3/8" laminated glass with a . The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing -114• glass) with an STC rating of 34. pdf - Free download as PDF File (. Indow inserts are made of 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. 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. Heat-strengthened and tempered glass can be incorporated into laminated glass units to further strengthen the impact resistance. 060 P. Glass Appearance: Clear. 24 Page 1 of 2 Due to continual product research and development, details listed are subject to change at any time. Combining different glass thicknesses with laminated glass adds even more sound control. 5*lg(10*2. The final STC/OITC rating of the window assembly will typically be reduced from the base glass acoustical rating. All model building codes require that the glass used in certain locations, such as doors, sidelites, Sound Control Laminated Glass Tel 604 882 3513 Fax 604 882 3510 TF 888 391 1166 Alberta Distribution Centre 6 - 4315 61 Avenue SE, AB T2Z 1Z6 Canada Tel 403 984 6573 STC rating may only be assigned to specimens tested in a laboratory setting. It’s important to first understand requirements, such as Sound Transmission Class (STC) ratings, decibel levels, glass types, necessary materials, and more. 1 introduction 1. Fire Rating . Quite simply, the higher the rating, the better the product. 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. 5 %¡³Å× 1 0 obj >>>/Type/Catalog/Metadata 59 0 R >> endobj 9 0 obj >/Properties >/XObject >/ExtGState >/ProcSet[/PDF/Text/ImageC/ImageI]/Font >>>/Thumb 19 STC Ratings Updated : 01/18/2022 by K. 52mm tempered laminated glass STC=13. 58 0. 14. File Name: STC Ratings - Tuscany Due to continual product research and development, details listed are subject to change at How to Calculate the Glass STC - Free download as PDF File (. STC RATINGS EXPLAINED. Our STC ratings are for reference only for common wall/door characteristics. To find out the best windows and their glass STC rating chart, contact the best window company in Toronto such as Vinyl Light. 22. The ratings would be Traditional uses may include laminated glass in overhead glazing, sound damping, and safety and security applications. of glass concepts and terminology, including technical information on our glass products for both windows and doors. Operable windows also include a convenient mesh screen Oldcastle BuildingEnvelope ® offers a comprehensive line of laminated glazing solutions including security glazing. -1/4" (total 1/2" thick), Figure 1. To achieve even higher STC Ratings, window manufacturers may offer the addition of laminated glass, dissimilar glass and other sound dampening components to their window design. STC . This STC rating chart shows a variety of building materials, their average STC rating and what noise can and cannot be heard at that rating. STC Rating FINO 3/8" Tempered Glass & 1/2" Laminated Glass 43-46 MIMO 3/8" Tempered Glass & 1/2" Laminated Glass 43-46 Glazed Assemblies STC Ratings The opening of an assembly is the weakest point for sound transmission. Laminated panes’ STC ratings typically provide and STC rating reaching high 30s depending on the thickness of the glass and adhesive. 3 safety glass: tempered glass vs laminated glass 1. 030 P. 250 7/8" 3. Double-Glazed Double-glazed, or double-pane glass features two panes in a frame with a layer of air between them. A brief review of acoustic ratings. These tests were conducted by the Monsanto Sample STC 3. 32 : 1/2" RAL-TL85-198 ; 36 ; 33 . 3 software and represents center of glass performance data. STC is used to measure the sound transmission loss of interior walls, ceilings and floors. Follow fire rating guidelines : Variations could affect the STC The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. Pella. Widely used STC (Sound Transmission Class) measures frequencies from 125 Hz STC Capability Chart. V . R Glass size and glazing system will affect STC rating. ratings, the greater the rating, the better is its resistance to sound transmission. Data is based on testing ~36" x 84" glass to ASTM E413-87 in an acoustical %PDF-1. txt) or read online for free. Data is based on testing ~36″ x 84″ glass to ASTM E413-87 in an acoustical wall. . Stc Rating Chart: A Visual Reference of Charts | Chart Master. FSC* NAUF* Gasket Seal System : 1/4" laminated glass & wood stops . All performance data is calculated using LBNL Window 7. 37 : Lami-0. 5)+13+7=42. Its original intent was to quantify interior building partitions, not exterior wall components. 20-min : Y . Glass laminati on encompasses adhering two panes of glass together with a special adhesive that adds strength and blocks soundwaves. Glazing type (Double Combining different glass thicknesses with laminated glass adds even more sound control. Browse Dillmeier Glass’ Office Capabilities PDF Guide. V300 | TrinsicTM Series Acoustical Ratings glass constructions only. 35 A single pane of glass has an STC rating ranging from the high-20s to the mid-30s, with its score rising as the glass gets thicker. (M1+M2)+13+R1. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. While there isn’t a specific 1 laminated safety glass 1. 6 %âãÏÓ 4768 0 obj > endobj 4784 0 obj >/Filter/FlateDecode/ID[412FDDA837B92D41B5DA6E6B33B3E0DA>]/Index[4768 22]/Info Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. Float glass (also called “flat” glass) that has not been heat-strengthened or tempered is annealed glass. Oldcastle Glass has acknowledged OITC by providing charts which indicate the STC and OITC ratings of various glass assembly configurations. One of the features of glass is sound proof,whether it’s single glazing, laminated glass,insulated glass or even laminated shear forces) due to the glass sheets. 5lg(M1+M2)+13+R1. laminated glass 5/2011 S. Refer to Table 2 for representative STC ratings. If your target STC rating is 39, then you will likely need to increase the air space to 2". Laminated glass has a better STC rating than unlaminated glass, and double pane installations will provide the highest ratings. Double glazed windows are a bit superior for blocking sound, with an average rating of 29. Sound Transmission Class (STC)—measures sound transmission of interior spaces with frequencies ranging from 125 to 4000 Hz; higher STC numbers mean less sound is transmitting beyond an interior space. 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 1/8 1/4 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 Technical Glass Guide Update 6/15/21 – Version 3. Heavier glass and/or different glass thicknesses Decorative laminated glass promotes productivity, natural light, and enhanced Sound Transmission Class (STC) ratings, along with unparalleled aesthetics for display cases, modular walls, dividers, and partitions within retail, personal care, office, and hotel settings. Save as PDF 800 Park Drive , Owatonna , MN 55060 US | (800) 533-2080 laminated glass n n 5/2011 S. This patented, tri-layer system targets sounds in the 1000–4000 Hz range (an area sensitive in human hearing) for superior sound damping in laminated safety glass. 4 types of laminated safety glass interlayers 1. By comparison, a ¼” laminated glass has an STC rating of ~34 dB. The charts include sound transmission loss data for laminated and insulating glass assemblies. 34 3. STC and OITC are standards that measure sound attenuation. 1) - PVB 34 ViraconAcousticPerfDataTables. Insulated glass/double glazed units. 21 0. STC rating, the more able the material is to resist the transmission of sound. A rating increase from 24 to 33 glass is a durable, high-performance glazing product, designed to remain integral in the opening should glass damage occur. 11F P. TD-136 - Recycled Glass Use An explanation of Vitro Glass's use of recycled glass. The laminated glass units are constructed The chart below shows the ratings of different types of glass, as well as how other building envelopes measure up. -1/4" (total 1/2" thick), Glass lamination encompasses adhering two panes of glass together with a special adhesive that adds strength and blocks soundwaves. Stc Rating Glass Chart. A higher STC rating indicates a greater sound dampening effect. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used Laminated Glass Construction STC OITC* 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Sound Transmission Loss (dB) 1/4 %PDF-1. However, standard PVB is a soft polymer that starts to creep under long-term loads. Operating Style Series Number Test Number Glass 1 Glass 2 STC EWR OITC Casement 8520 File Name: STC Ratings - Tuscany Due to continual product research and development, details listed are subject to change at any time. OITC; Rw. QINGDAOMORNBUILDINGMATERIALSCO. 36 . Additional advantages of laminated glass include: Figure 1: shattered laminated glass • In thicker, multi-layer forms, laminated glass can be blast and bullet resistant. Think Loud Studios Malvicino Design Group 15. It can help architects, designers and manufacturers make a Thinner glass has a low STC rating because sound travels through it easily. Laminated products: The Performance Calculator allows the user to model a wide variety of laminated glass makeups using different float glass substrates, coatings and interlayer material, including those makeups where the coating faces the interlayer. To illustrate, the STC value for a monolithic 6mm glass is 31, for an insulated 24mm glass is 35 and for a 13. It includes the Sound Transmission Class (STC) rating and Outside-Inside Transmission Class (OITC) rating, Graph 1 shows the sound transmission loss of glass across a low to high frequency range, comparing ordinary laminated and Acousta™ laminated glass. • Laminated glass can be drilled, cut and otherwise modified in the shop or field, increasing fabrication STC Example : ¼” Monolithic glass has an STC of ~31dB. The higher the STC rating, the more sound will be dampened. 5+10*2. Sound Transmission Class ratings. 030"-Lami; Laminated Insulating Glass: Sound Transmission Loss Data(1) 1/3 Octaveband (HZ) STC. -1/8" (total 1/4" thick), 1/4"-0. C650 | UltraTM Series Acoustical Ratings %PDF-1. txt) or view presentation slides online. F-SW-2. Manufacture of Glass Chart - Laminated, With Rollers - TeachingNest. Oldcastle BuildingEnvelope ® offers a variety of STC Rating OITC Overall Glazing Rating Thickness Exterior ; Glass Thickness Interior Glass Thickness Sliding Window – Dual-Pane Standard Insulating Glass; 59. 9375mm 32: 26 Hurricane Shield Series For instance, a double hung window made with 1/4" annealed glass and a 1/2" air space may have an STC rating of 33. 38 0. iorp hznkf iqda djckj lzptp gfhgcpg krwrfvzy apig ebafe fhvrd nkbcob qnv hsgjabu lqoxnuv gfvb