20" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 12 5/8"] w12h12 + Product Details Size –

+ Product Details Size – 16"w X 30"h is the size for the duct opening measurement only

Installation Location – Floor

4" X 10" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

strong aluminum construction with smooth finished edges for easy and safe use

only measure the "hole" in the wall/duct

20" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 12 5/8"] w12h12 + Product Details Size –+ Product Details Size 20"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 12 5 8" height High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall & ceiling Design removable frame for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your