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stair risers
Standard Features * 1" rim size (2" larger than nominal duct size) * 14 gauge steel * 1305: 1/2" lattice opening
Half-length screwdriver operated Scoop Extractor
tony@registers-direct
Holds up to a 2" filter (not included) with filter retention tabs (FG2)
4" Horizontal/Vertical Mount Fire Damper 2634-40X10 Residential Registers & Grilles stair risersh3. 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
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