Backdraft Vertical Mount 3550-18X18 Residential Registers & Grilles Spiral Diffuser Radius Flush Mount

Spiral Diffuser Radius Flush Mount Diffuser Single Deflec

055 T6 extruded aluminum frame * Movable cores provide multiple fixed blade air patterns * Square collar * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * MA O - recessed screwdriver operated opposed blade damper * Square to round No Labor Collar * 700 MA and MA T - T-Bar mount * 1320 Series - stainless steel fixed pattern diffuser * DCF (Deep Ceiling Frame) - steel frame design prevents smudging of ceiling surface area surrounding diffuser * DCF O above with opposed blade damper * MA CM - concealed mount * Tamper proof screws * Standard Color or Designer Color Finish available on this product Additional Drawings * MA DCF

FGAD Series Submittal

Installation Instructions * UL approved installation instructions

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 20" Duct Opening (front blades parallel to shortest dimension)

Backdraft Vertical Mount 3550-18X18 Residential Registers & Grilles Spiral Diffuser Radius Flush Mounth3. Standard Features * 3550 Vertical mount * 3560 Horizontal mount air up * 3570 Horizontal mount air down * 3580 Round sizes available 5" to 24" * All non motorized backdraft dampers * Dampers are opened by air pressure differential and closed by gravity * 16 gauge channel frame with 26 gauge galvanized blades * Out of airstream linkage * Blades are vee stiffened 26 gauge for strength and stability * Square steel pivot pins * Nylon bushings * Single