25" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 27 5/8" X 27 5/8"] flat stamped steel + Product Details Size -

+ Product Details Size - 16"w X 22"h is the size for the duct opening measurement only

High Quality – Polished pre-finish gloss varnish ready to install - can also be sanded and re-finished according to application needs

border-radius: 50%

+ Product Details Size – 20"w X 6"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 8 5/8" height

25" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 27 5/8" X 27 5/8"] flat stamped steel + Product Details Size -+ Product Details Size 25"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27 5 8" width X 27 5 8" height Actual Filter Size 24 3 4"w x 24 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.