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

+ Product Details Size – 14" X 4" is the size for the duct opening (floor/vent hole) measurement only

Scratch-Resistant Finish - The powder-coated surface offers a smooth

Actual Filter Size – 29 3/4"w x 23 3/4" x 1"

please note that the total outer dimensions of the grille measure 7" in diameter

This grille has a high standard of design

25" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 27 5/8" X 27 5/8"] 8in diameter + 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.