12" X 32" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 34 5/8"] w20h20 Size - 10"w X 10"h 14" Round Duct Pipe FR M 414 White For 10 duct opening

Size - 10"w X 10"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 13 3/4" x 1"

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

actual front end outer dimensions are approximately 22 5/8" width X 42 5/8" height

+ Product Details Size - 28"w X 22"h is the size for the duct opening measurement only

12" X 32" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 14 5 8" X 34 5 8"] w20h20 Size 10"w X 10"h 14" Round Duct Pipe FR M 414 White For 10 duct opening Size 10"w X 10"h is the size for the duct opening measurement only Actual Filter Size – 19 3 4"w x 13 3 4" x 1"