12" X 14" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 16 5/8"] Insulated Line Set actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 20 5/8" height

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+ Product Details Size - 18"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 24"w X 20"h is the size for the duct opening measurement only

12" X 14" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 16 5/8"] Insulated Line Set actual front end outer dimensions+ Product Details Size 12"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 16 5 8" height Actual Filter Size 11 3 4"w x 13 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter