20" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 27 5/8"] w18h18 Actual Filter Size – 23

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

+ Product Details Size - 34"w X 36"h is the size for the duct opening measurement only

The total outer size of this grille is the listed size plus 1

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

+ Product Details Size – 8" x 12" or 12" x 8" is the size for the duct opening measurement only

20" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 27 5/8"] w18h18 Actual Filter Size – 23+ Product Details Size 22"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 24 5 8" width X 27 5 8" height. High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Ceiling Design Fixed hinged for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your fingers and