Aluminum Airfoil Blade Grille - Horizontal Fixed Blade 907-48X4 Finish:Designer Color - Velvet Black Building materials rated 3 hours

Building materials rated 3 hours or less

3 or 4 way air patterns from face * One size fits 6" thru 16" (collar by others) * Soft White

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 30" Duct Opening (front blades parallel to shortest dimension)

To adjust diffuser

All steel galvaneal construction

Aluminum Airfoil Blade Grille - Horizontal Fixed Blade 907-48X4 Finish:Designer Color - Velvet Black Building materials rated 3 hoursStandard Features * Extruded . 055 T6 aluminum 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 * 907 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