Aluminum Door Grille 4100-28X10 Finish:Designer Color - Velvet Black Standard Features * 1/2" spacing

Standard Features * 1/2" spacing dual angular louvers * 22 & 20 gauge cold roll steel * Hand operated lever for easy filter access * Holds up to 2" thick standard filter (not included) * Removable face for easy cleaning and maintenance * Filter door hinges parallel to longest side * 4-way reversible door on square sizes * 2-way reversible door on rectangular sizes * Filter retention tabs * Concealed mounting holes * Soft White Options * SPFG-4 - holds 4" deep air filter * Standard Color

Standard Features *Surface mount return air grille * 45 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 935 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

Front blades are parallel to the shortest dimension

Half-length screwdriver operated Scoop Extractor

Standard Features * 1/2" x 1/2" x 1/2" aluminum lattice return air grille * Surface mount grille with

Aluminum Door Grille 4100-28X10 Finish:Designer Color - Velvet Black Standard Features * 1/2" spacingStandard 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 *