30" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 20 5/8"] Color_R-8.0 Pink the gap will expand and

the gap will expand and retract to meet perfect air supply needed

and waste gases transmission lines

forEach(header => { header

75" width X 19

With a 5" diameter for the duct opening measurement

30" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 20 5/8"] Color_R-8.0 Pink the gap will expand and+ 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.