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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
Narrow ceiling grid dimples for 9/16" T-Rails
3/16” holes on 1/4” staggered centers Extruded aluminum frame with signature line marks Perforated material 58% free area Countersunk mounting holes for flush appearance with color matching Phillips posi- drive screws Rust resistant pre-coat with durable powder finish Soft White
Nylon bushings on adjustable blades prevent metal on metal rattle
4-way reversible door on square sizes
104 D FR - U
4 1/4" Vertical Mount Fire Damper 2633-20X14 Residential Registers & Grilles Narrow ceiling grid dimples forh3. Standard Features * 2633 Square or rectangular out of airstream fire damper for vertical mount only. * 2634 Square or rectangular Spring actuated (6) out of airstream fire damper for horizontal or vertical mount. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Maximum dimension 60w, 52h * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion
