2" 3 Hour Vertical Mount Fire Door 2561-48X48 Smoke-Fire Damper 7/8” Wide x 7/8” High

7/8” Wide x 7/8” High square holes

Standard Features *Surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of steel blades * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Single deflection diffuser with adjustable steel blades * steel blades are parallel to shortest dimension * Allows 2-way air deflection on one plane * Soft White Options * 932 O - with recessed screwdriver operated opposed blade damper * 1331 and 1332 Series - stainless steel single deflection * Tamper proof screws * Standard Color or Design Color Finish available on this product

904 - Double Deflection Adjustable Aluminum Blade Grille For a 38" x 18" Duct Opening (front blades parallel to shortest dimension)

Fractional

2" 3 Hour Vertical Mount Fire Door 2561-48X48 Smoke-Fire Damper 7/8” Wide x 7/8” Highh3. Standard Features * 2561 Square or rectangular fire door for vertical mount only. Maximum dimension 48w, 49h. For damper free area chart A click here * 2563 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. For damper free area chart B click here * 2565 Round fire door for vertical mount only. Available 4" thru 40" round. * UL and California State Fire Marshall approved * 2" thinline frame *