4" Horizontal/Vertical Mount Fire Damper 2634-30X22 Commercial Collar sizes available in 6”–10”

Collar sizes available in 6”–10”

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 18" Duct Opening (front blades parallel to shortest dimension)

Holds up to a 2" filter (not included) with filter retention tabs (FG2)

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

4" Horizontal/Vertical Mount Fire Damper 2634-30X22 Commercial Collar sizes available in 6”–10”h3. 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