25" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 27 5/8" X 27 5/8"] Insulated Line Set with actual outer dimensions of

with actual outer dimensions of 20

actual front end outer dimensions are approximately 20 5/8" width X 20 5/8" height

each available in a variety of high-quality materials like brushed nickel

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+ Product Details Size - 30"w X 18"h is the size for the duct opening measurement only

25" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 27 5/8" X 27 5/8"] Insulated Line Set with actual outer dimensions of+ 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.