4" Round Horizontal/Vertical Fire Damper 2650-9 Specialty Products 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 6" Duct Opening  (front blades parallel to shortest dimension)

remove the two center cones as a unit and reposition the six screws

Standard Features * Surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of steel blades * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Double deflection diffuser * Front blades parallel to longest dimension * Back blades parallel to shortest dimension * All blades adjustable allowing 4-way flow adjustment * Soft White Options * 933 O - with recessed screwdriver operated opposed blade damper * 1333 and 1334 Series - stainless steel double deflection * Tamper proof screws * Standard Color or Design Color available on this product

Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser

Standard Features * 2533 - Square or rectangular for vertical mount only

4" Round Horizontal/Vertical Fire Damper 2650-9 Specialty Products 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