36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] 18" Diameter Filter grille features a user-friendly

Filter grille features a user-friendly plastic latch that requires no screwdriver for opening

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the actual front end outer dimensions are 8" in diameter

+ Product Details Size - 16"w X 14"h is the size for the duct opening measurement only

36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] 18" Diameter Filter grille features a user-friendly+ 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