25" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 27 5/8" X 22 5/8"] 8" Diameter Design – Rigid gauge built

Design – Rigid gauge built for durability and long life in mind

+ Product Details Size - 20"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 23 3/4" x 1"

and its seamless drop-in installation process ensures effortless setup

actual front end outer dimensions are approximately 22 5/8" width X 18 5/8" height

25" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - Black - [Outer Dimensions: 27 5/8" X 22 5/8"] 8" Diameter Design – Rigid gauge built+ Product Details Size 25"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27 5 8" width X 22 5 8" height Actual Filter Size 24 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.