28" X 8" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 10 5/8"] Powder Coated + Product Details Size – 14" Round Duct Pipe For 10 duct opening FR M 414 White

+ Product Details Size – 10" x 14" or 14" x 10" is the size for the duct opening measurement only

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

+ Product Details Size – 34"w X 32"h is the size for the duct opening measurement only

Actual Filter Size – 25 3/4"w x 35 3/4" x 1"

28" X 8" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 30 5 8" X 10 5 8"] Powder Coated + Product Details Size – 14" Round Duct Pipe For 10 duct opening FR M 414 White + Product Details Size – 10" x 14" or 14" x 10" is the size for the duct opening measurement only actual front end outer dimensions are approximately 27 5 8" width X 34 5 8" height