34" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 38 5/8"] 8" Diameter Versatility and Durability: The red

Versatility and Durability: The red oak wood not only adds a touch of warmth and softness to your room but can also be sanded and refinished according to your specific application needs

Actual Filter Size – 27 3/4"w x 19 3/4" x 1"

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

+ Product Details Size - 6"w X 30"h is the size for the duct opening measurement only

34" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 38 5/8"] 8" Diameter Versatility and Durability: The red+ 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.