20" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 12 5/8"] w25h25 + Product Details Size –

+ Product Details Size – 36"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 18 5/8" height

Actual Filter Size – 7 3/4"w x 11 3/4" x 1"

Carefully Shrink Wrapped – With cardboard backing to prevent damage in shipment

please note that the total outer dimensions of the grille measure 8" in diameter

20" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 12 5/8"] w25h25 + Product Details Size –+ Product Details Size 20"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 12 5 8" height Actual Filter Size 19 3 4"w x 9 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our