20" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 22 5/8"] steel Its professional design and solid

Its professional design and solid construction make it the perfect solution for safeguarding your thermostat against unwanted access

actual front end outer dimensions are approximately 18 5/8" width X 38 5/8" height -

actual front end outer dimensions are approximately 24 5/8" width X 31 5/8" height

+ Product Details Size – 6" x 12" or 12" x 6" is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 27 3/4" x 1"

20" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 22 5/8"] steel Its professional design and solid+ Product Details Size 20"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 22 5 8" height Actual Filter Size 19 3 4"w x 19 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.