4" Horizontal/Vertical Mount Fire Damper 2634-32X8 Step Down Ceiling Diffuser 1 1/2 hour fire resistance

1 1/2 hour fire resistance rating

smooth style * 360 air diffusion * Excellent for variable air volume applications * Hinged-down core for easy access * No Labor Collar * Seismic support hangers * Available sizes: 6"-10"

Airfoil blades individually adjustable on 3/4" centers

904 - Double Deflection Adjustable Aluminum Blade Grille For a 14" x 10" Duct Opening (front blades parallel to shortest dimension)

Standard Features * Fixed bar blades parallel to 1st dimension given *

4" Horizontal/Vertical Mount Fire Damper 2634-32X8 Step Down Ceiling Diffuser 1 1/2 hour fire resistanceh3. 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