30" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 32 5/8" X 18 5/8"] Insulated Line + Product Details Size -

+ Product Details Size - 12"w X 18"h is the size for the duct opening measurement only

line-height: 22px

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

actual front end outer dimensions are approximately 8

+ Product Description Introducing HVAC Premium's Aluminum Adjustable Return Grill – the key to enhanced air control and energy efficiency

30" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 32 5/8" X 18 5/8"] Insulated Line + Product Details Size -+ Product Details Size 30"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32 5 8" width X 18 5 8" height Actual Filter Size 29 3 4"w x 15 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.