4" Horizontal/Vertical Mount Fire Damper 2634-12X6 Accessories 7/8” Wide x 7/8” High

7/8” Wide x 7/8” High square holes

Steel construction

5/32” crossbars

linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 200 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color

4" Horizontal/Vertical Mount Fire Damper 2634-12X6 Accessories 7/8” Wide x 7/8” Highh3. 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