4" Round Vertical Mount Fire Damper 2649-44 past 12 months Install with louvers in up

Install with louvers in up or down position for best duct concealment

055 T6 extruded aluminum frame * 90% free area * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 600 O - opposed blade damper * No Labor Collar - Square to round (square sizes only) * 600 T - T-Bar mount * 1/2" x 1/2" x 1" Lattice or 1" x 1" x 1" Lattice * Fractional sizes

104 D FR - U

For damper free area chart B click here * 2665 - Round fire door for vertical mount only

Dampers above 80 square inches free area will be provided with blade insulation

4" Round Vertical Mount Fire Damper 2649-44 past 12 months Install with louvers in uph3. 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