16" X 12" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 14 5/8"] white actual front end outer dimensions RFGF1212 Rigid Design Noise Free Oval to Round 90-Degree Boot

actual front end outer dimensions are approximately 32 5/8" width X 32 5/8" height -

+ Product Details Size - 8"w X 22"h is the size for the duct opening measurement only

75" width X 25

simplifying maintenance

actual front end outer dimensions are approximately 34 5/8" width X 27 5/8" height -

16" X 12" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 18 5 8" X 14 5 8"] white actual front end outer dimensions RFGF1212 Rigid Design Noise Free Oval to Round 90 Degree Boot actual front end outer dimensions are approximately 32 5 8" width X 32 5 8" height + Product Details Size 8"w X 22"h is the size for the duct opening measurement only