22" X 30" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 32 5/8"] Copper Coil-Insulated Line Set Actual Filter Size – 24 Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Actual Filter Size – 24 3/4"w x 17 3/4" x 1"

+ Product Details Size - 4"w X 32"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 12 5/8" height

+ Product Details Size - 28"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 35 3/4"w x 5 3/4" x 1"

22" X 30" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 24 5 8" X 32 5 8"] Copper Coil Insulated Line Set Actual Filter Size – 24 Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Actual Filter Size – 24 3 4"w x 17 3 4" x 1" + Product Details Size 4"w X 32"h is the size for the duct opening measurement only