4" Horizontal/Vertical Mount Fire Damper 2634-24X22 Smoke-Fire Damper contour molded fiberglass back with

contour molded fiberglass back with a foil barrier backing

Standard Features * For evaporative cooling or high velocity exhaust applications with divided 2-way multi-louver and combination shut-off * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White

Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser

Allows for 4-way airflow adjustment

Standard Features * Heavy duty honeycomb construction * Blades run parallel to longest dimension given * Gym Grade - includes welded core and extra supports for heavy duty application * Mounting holes for sidewall and ceiling application * Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system * Soft White Options * No mounting holes * Tamper Proof Screws * Standard Color

4" Horizontal/Vertical Mount Fire Damper 2634-24X22 Smoke-Fire Damper contour molded fiberglass back withh3. 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