10" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 36 5/8"] Insulated Line Set + Product Details Size - RG1620AL Quality Packaging carefully packaged 8 Feet Long

+ Product Details Size - 24"w X 32"h is the size for the duct opening measurement only

Actual Filter Size – 15 3/4"w x 21 3/4" x 1"

+ Product Details Size - 16"w X 34"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 14 5/8" width X 20 5/8" height

10" X 34" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 12 5 8" X 36 5 8"] Insulated Line Set + Product Details Size RG1620AL Quality Packaging carefully packaged 8 Feet Long + Product Details Size 24"w X 32"h is the size for the duct opening measurement only Actual Filter Size – 15 3 4"w x 21 3 4" x 1"