Fixed Airfoil Blade Filter Grille 900FG-24X10 Step Down Ceiling Diffuser inner dimension and outside dimension

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

and 2x4 panels * Soft White

Standard Features * Fixed blade return air T-Bar lay-in filter grille * Square collar for 20 1/2" x 20 1/2" duct * Hinged removable face * 20" x 20" x 1" filter (not included) * Seismic support holes * Soft White Options * 920 TFG - steel outer frame * 920 2 TFG - 2" filter spacing (filter not included) * No Labor Collar - square to round (2x2 only) * 1x2 (20x8 filter) or 2x4 (20x44 filter) * Satin Anodized Finish available on this product

Adjustable modular cores with fixed curved blades

904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 4" Duct Opening  (front blades parallel to shortest dimension)

Fixed Airfoil Blade Filter Grille 900FG-24X10 Step Down Ceiling Diffuser inner dimension and outside dimensionStandard Features * Fixed airfoil blades parallel to 1st dimension given * . 060 T6 extruded aluminum construction * 45 fixed blade face to conceal filter * Hand operated lever for easy filter access * Concealed mounting holes * Filter door hinges parallel to longest side * Filter retainers * Removable face for easy cleaning * For 1" filter (not included) * Soft White Options * 900 2 FG 2" filter spacing (filter not included) * 900 TFG T Bar mount *