22" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 8 5/8"] Aluminum - Cube Core + Product Details Size – Height_16in RG1612AL Product Details Size 14

+ Product Details Size – 12"w X 12"h

+ Product Details Size – 34"w X 18"h is the size for the duct opening measurement only

4" X 12" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

85" width X 15

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 16" duct opening (measured at the opening)

22" X 6" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 24 5 8" X 8 5 8"] Aluminum Cube Core + Product Details Size – Height_16in RG1612AL Product Details Size 14 + Product Details Size – 12"w X 12"h + Product Details Size – 34"w X 18"h is the size for the duct opening measurement only