Aluminum Airfoil Blade Grille - Vertical Fixed Blade 908-38X42 Damper:without Damper Holds up to a 4"

Holds up to a 4" filter (not included) with filter retention tabs (FG4)

Diffuser available in sizes 6×6 through 20×20

Available in 4" through 24" round

Minimum size 4"x4"

Aluminum Airfoil Blade Grille - Vertical Fixed Blade 908-38X42 Damper:without Damper Holds up to a 4"Standard Features * Extruded . 055 T6 aluminum surface mount return air grille * 0 fixed blades parallel to shortest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 908 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