10" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 12 5/8"] 8" Diameter + Product Description Maximize the 4 X 12 Is CRFG2028 Width_14in

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

Actual Filter Size – 29 3/4"w x 15 3/4" x 1"

European: EN 10270-1-SM

Looks Like It Was Just Waxed

+Product Details Size – 2"h x 12"w is the size for the duct opening measurement only

10" X 10" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 12 5 8" X 12 5 8"] 8" Diameter + Product Description Maximize the 4 X 12 Is CRFG2028 Width_14in + Product Description Maximize the efficiency of your ventilation system with our top of the line HVAC grilles and registers Actual Filter Size – 29 3 4"w x 15 3 4" x 1"