28" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 22 5/8"] Filter Grille you have 16 different varieties

you have 16 different varieties to choose from

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

+ Product Details Size – 16"w X 22"h is the size for the duct opening measurement only

but still very thin

28" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 22 5/8"] Filter Grille you have 16 different varieties+ 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