14" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 16 5/8" X 27 5/8"] 18in diameter Installation is hassle-free

Installation is hassle-free

/* slightly looser */ color: #333

thanks to counter-sunk screw holes and included screws

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

+ Product Details Size - 36"w X 24"h is the size for the duct opening measurement only

14" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 16 5/8" X 27 5/8"] 18in diameter Installation is hassle-free+ Product Details Size 14"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16 5 8" width X 27 5 8" height Actual Filter Size 13 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.