2" Vertical Mount Fire Damper 2501-40X10 Specialty Products 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille For a 22" x 18" Duct Opening (front blades parallel to shortest dimension)

One piece steel frame

102 PC - corner

accepts 6"-16" collar (collar by others)

2" Vertical Mount Fire Damper 2501-40X10 Specialty Products 904 - Double Deflection Adjustableh3. Standard Features * 2501 Square or rectangular for vertical mount only. Maximum dimension 48w, 49h. * 2502 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 41w, 36h. * UL and California State Fire Marshall approved * 2" thinline frame * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G 90) * Self