Aluminum Door Grille 4000-32X32 Finish:Designer Color - Storm Gray Blades spaced at 2/3"

Blades spaced at 2/3"

Square to round transition collar

Round ceiling radiation butterfly damper

Standard Features *Surface mount return air grille * 0 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 937 O - recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T - T-Bar mount * 905 HD - reinforced construction * 905 IS - insect screen * 1335-1338 Series - stainless steel version * Tamper proof screws

½ × ½ × ½ Aluminum lattice

Aluminum Door Grille 4000-32X32 Finish:Designer Color - Storm Gray Blades spaced at 2/3"Standard 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 *