20" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 20 5/8"] Grilles + Product Details Size –

+ Product Details Size – 10" x 16" or 16" x 10" is the size for the duct opening measurement only

+ Product Details Size - 10"w X 14"h is the size for the duct opening measurement only

5" width x 13

+ Product Details Size - 24"w X 30"h is the size for the duct opening measurement only

represents the width

20" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 20 5/8"] Grilles + Product Details Size –+ Product Details Size 20"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 20 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