18" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 24 5/8"] Black Our coils have a a

Our coils have a a very high PSI burst pressure

please note that the total outer dimensions of the grille measure 8" in diameter

1/2” - 3119 PSI

+ Product Details Size – 22"w X 29"h is the size for the duct opening measurement only

Crafted from solid stamped steel

18" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 24 5/8"] Black Our coils have a a+ Product Details Size 18"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 24 5 8" height Actual Filter Size 17 3 4"w x 21 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.