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“ LOUVER AND GLASS IN FIRE RATED DOOR? ”

Resolution: A fire rated door for 3 hours can have one glass light maximum: 100 square inches and must have an approved glass (Firelite type) Max glass size cannot exceed 12" in width or 33" in height. Wi...:

What is the maximum glass light size on a 90 min (1 1/2 hour) fire rated door?

Resolution: Standard listed wire glass: one (1) light with 100 in2 per door leaf max.Firelite or other appropriately listed glass:• FM maintains one (1) light with 100 in2 per door leaf max.• UL &...:

What is the maximum glass light size on a 3 hour (180 minute) fire rated door?

Resolution: Maximum glass light sizes for 3 hour fire doors is as follows: Wire glass - not approved for use in 3 hour fire doors. Ceramic glass: UL & ITS/WH allow one (1) light with 100 square inc...:

Can louvers be installed in fire rated transom frames?

Resolution: NO - Louvers are not approved for installation in a fire rated transom / side panel frames. NFPA Pamphlet 80 - paragraph # 6.3.4.4 states “Louvers shall not be installed in either transom or s...:

What is the max rating available on an full glass (FG) door?

Resolution: A UL 20 minute fire rating is the maximum fire rating for a Full Glass (FG) door design. A14-Series door construction: Max fire rating is 20 minute. UL label only FG must use Over-Lapping Stee...:

What is the maximum glass light size available on a 20 minute sidelight frame?

Resolution: On fire rated transom and/or sidelight frames and fire rated window frames, Steelcraft labeling procedures only control the O/A width and/or height of the frames based on wall condition. The amount...:

What fire ratings are available on DW-Series Borrowed Lights?

Resolution: DW-Series Fire Rated Borrowed Lights are available in the following sizes: 60 minute (1 hour) rating = 2721 square inches of visible glass. maximum frame rabbet to rabbet dimensions = 78 1/4...:

Can Von Duprin GBK's be stacked up to clear a 9/16" glass bead on a fire door?

Resolution: You can only use one GBK Glass Bead Kit (1/4") per device on fire rated openings. Glass Bead Kit is for use on doors with raised glass beads.:

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“ LOUVER AND GLASS IN FIRE RATED DOOR? ”

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