Aluminum Airfoil Blade Grille - Horizontal Fixed Blade 907-28X34 Step Down Ceiling Diffuser inner dimension and outside dimension

inner dimension and outside dimension sizes available * Tamper proof screws * Standard Color

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

904 - Double Deflection Adjustable Aluminum Blade Grille For a 38" x 18" Duct Opening (front blades parallel to shortest dimension)

PERFORMANCE DATA FGAD Series Engineering/Performance Data

Aluminum Airfoil Blade Grille - Horizontal Fixed Blade 907-28X34 Step Down Ceiling Diffuser inner dimension and outside dimensionStandard 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