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g <br /> PYROSWISS® 20 <br /> Fire-Rated Clear Tempered Safety Glass for 20 Minute Doors <br /> CLASSIFICATION PRODUCT FEATURES <br /> ...--- <br /> iii : <br /> TECHNICAL SPECIFICATIONS <br /> Fire Rating 20 Minutes <br /> US Testing/Compliant Listed and labeled with Underwriters Laboratories File#814515;NFPA 80&252,UL 10C <br /> Impact Safety Rating CPSC 16CFR PART 1201 Categories I&Ii,ANSI Z97.1 <br /> Nominal Thickness 1/4"(6 mm) <br /> Thickness Tolerance 0.219"to 0.244"(5.56 mm to 6.20 mm) <br /> U Value(8TU/hr`sgft/F) 0.88 <br /> STC Rating 32 <br /> Weight(Ibs/sq.ft.) 3.2 <br /> Visible Light Transmission 89% <br /> AUTHORIZED DIMENSIONS <br /> Rating Application Max Exposed Area Max Width of Max Height of MM Depth Groove width Building code <br /> of Glass(Sq in) Exposed Glass Exposed Glass of Groove Marking <br /> 20 Min Swinging Doors 3419 47-1/2" 95-1/2" 5/8" 3/8" D-20 <br /> * <br /> pvallabl� �ions-sa dblast, id etche <br /> For special requests pease con act your vetrotech sales representative. <br /> ftrrelaturfitakegoloacirinvanorerrumen <br /> Rev.3.15.15 The information published in thisdaument is correct at the time of going to press.Such information may be subject to change and products maybe modified. <br /> wwwvetratechUSA.com vetrotech <br />