Aluminum Airfoil Blade Grille - Horizontal Fixed Blade 905-18X18 Accessories Provides 4-way air flow on

Provides 4-way air flow on one plane

w/ Screwdriver Operated Opposed Blade Damper

904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 20" Duct Opening (front blades parallel to shortest dimension)

accepts 6"-16" collar (collar by others)

Aluminum Airfoil Blade Grille - Horizontal Fixed Blade 905-18X18 Accessories Provides 4-way air flow onStandard Features * Extruded . 055 T6 aluminum 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 * 905 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