36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] w26h26 Our innovative adjustable design changes

Our innovative adjustable design changes the game

+ Product Details Size - 16"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 10"h is the size for the duct opening measurement only

For a visual guide on how to measure your vent hole before ordering a grille

Achieve the perfect airflow with adjustable control by rotating the middle disk

36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] w26h26 Our innovative adjustable design changes+ Product Details Size 36"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 22 5 8" height 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. Our filter grille latch is easy to use on