Aluminum Door Grille 4000-16X8 Finish:Driftwood Tan Countersunk mounting holes with color

Countersunk mounting holes with color matching Philips Pozidriv screws

1/2" spacing dual angular louvers for strength and maximum free area

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 8" Duct Opening  (front blades parallel to shortest dimension)

Ceramic fiber blade insulation with fiberglass cover*

Aluminum Door Grille 4000-16X8 Finish:Driftwood Tan Countersunk mounting holes with colorStandard 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 *