Aluminum Door Grille 4100-20X16 Accessories *Note: Ceramic fiber blade insulation

*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches

Soft white

904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 6" Duct Opening   (front blades parallel to shortest dimension)

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

Fan shaped 1/2" spaced louvers

Aluminum Door Grille 4100-20X16 Accessories *Note: Ceramic fiber blade insulationStandard Features * 4000 door core grille with single frame * 4100 door core grille with additional loose frame * . 060 T6 extruded aluminum construction * Completely vision proof * High air capacities * Will accommodate door thickness ranging from 1 1 4" to 2 1 4" * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Driftwood Tan Options * 1310 Series stainless steel door grille * Tamper proof screws *