Fixed Bar Blade Filter Grille 935FG-16X18 Residential Registers & Grilles inner dimension and outer dimension

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

Countersunk mounting holes for flush appearance

Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system

Designed for ceiling or sidewall applications

904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 8" Duct Opening   (front blades parallel to shortest dimension)

Fixed Bar Blade Filter Grille 935FG-16X18 Residential Registers & Grilles inner dimension and outer dimensionStandard Features * 45 degree fixed blades parallel to the longest dimension * 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 * SP935FG 4 holds 4" deep