16" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 18 5/8" X 27 5/8"] sidewall excluding the old vent cover

excluding the old vent cover

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Filter Size - 9

actual front end outer dimensions are approximately 38 5/8" width X 16 5/8" height -

Mounted with frame and bayonet joint which are included

16" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 18 5/8" X 27 5/8"] sidewall excluding the old vent cover+ Product Details Size 16"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 27 5 8" height Actual Filter Size 15 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.