34" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 38 5/8"] 8" Diameter + Product Details Size –

+ Product Details Size – 26"w X 28"h is the size for the duct opening measurement only

Quality Packaging – Carefully shrink wrapped with cardboard backing to prevent damage in shipment

+ Product Details Size - 20"w X 30"h is the size for the duct opening measurement only

Experience the difference in quality with our sleek design and hassle-free functionality

34" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 38 5/8"] 8" Diameter + Product Details Size –+ Product Details Size 34"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 36 5 8" width X 38 5 8" height Actual Filter Size 33 3 4"w x 35 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.