Core material: Polystyrene
Sound Transmission: STC 23 (18 Gauge operable)
Legion and UltraDor Fire Doors
Legion and UltraDor Fire Doors. Polystyrene core. UL, or WH label. Classified for openings rated at up to three hours (Class A,B,C,D,E, and 20 minute) which have no temperature rise restrictions. See tech data manual for sizing.
Maximum Size (See tech manual for fire rated sizing)
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