4" Round Horizontal/Vertical Fire Damper 2650-36 past 12 months 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 10" Duct Opening (front blades parallel to shortest dimension)

Surface mount fixed blade grille with airfoil blades at 0°

Designer Color or Other Finish available on this product

425 Series Engineering/Performance Data

Free area equals more than 75% of nominal size

4" Round Horizontal/Vertical Fire Damper 2650-36 past 12 months 904 - Double Deflection Adjustableh3. Standard Features * 2649 Round damper for vertical mount only. Available 4" thru 52" round. * 2650 Round spring actuated (6) damper for vertical or horizontal mount. Available 4" thru 52" round. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * 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 locking