4 1/4" Vertical Mount Fire Damper 2633-36X20 T-Bar Non-standard size collar (available in

Non-standard size collar (available in 6" through 20")

Standard Features * Steel honeycomb construction * Flush core and frame provides smooth surface * Free area equals more than 75% of nominal size * Driftwood Tan Options * Mounting holes for sidewall and ceiling application * 1600R - reinforced welded core and extra supports for heavy duty application * Standard Color

enclosed in valve to assure trouble-free operation

Standard Features * 4000 - door core grille with single frame * 4100 - door core grille with additional loose frame *

904 - Double Deflection Adjustable Aluminum Blade Grille For a 34" x 18" Duct Opening (front blades parallel to shortest dimension)

4 1/4" Vertical Mount Fire Damper 2633-36X20 T-Bar Non-standard size collar (available inh3. 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