10" X 26" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 28 5/8"] Insulated Line Set + Product Details Size -

+ Product Details Size - 14"w X 36"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 28 5/8" height

+ Product Details Size - 32"w X 24"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 24 5/8" height -

10" X 26" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 28 5/8"] Insulated Line Set + Product Details Size -+ Product Details Size 10"w X 26"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 12 5 8" width X 28 5 8" height Actual Filter Size 9 3 4"w x 25 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Location ceiling and sidewall Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter