28" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 26 5/8"] steel Actual Filter Size – 17

Actual Filter Size – 17 3/4"w x 23 3/4" x 1"

Installation – Easy to Install

actual front end outer dimensions are approximately 20 5/8" width X 36 5/8" height

actual front end outer dimensions are approximately 24 5/8" width X 22 5/8" height

actual front end outer dimensions are 32" width X 10" height

28" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 26 5/8"] steel Actual Filter Size – 17+ Product Details Size 28"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 30 5 8" width X 26 5 8" height Actual Filter Size 27 3 4"w x 23 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.