28" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 22 5/8"] Filter Grille Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 7 3/4" x 1"

this filter grille never rusts and withstands long-term use in any environment

Actual Filter Size – 47 3/4"w x 23 3/4" x 1"

Actual Filter Size – 29 3/4"w x 5 3/4" x 1"

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

28" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 22 5/8"] Filter Grille Actual Filter Size – 21+ Product Details Size 28"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 30 5 8" width X 22 5 8" height Actual Filter Size 27 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 Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on