30" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 38 5/8"] RV Mobile Home + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 30"w X 16"h is the size for the duct opening measurement only

Looks like new after years of use

+ Product Description Upgrade your ventilation with our premium grilles and registers

+ Product Details Size – 12"w X 30"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 25 3/4" x 1"

30" X 36" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 32 5 8" X 38 5 8"] RV Mobile Home + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 30"w X 16"h is the size for the duct opening measurement only Looks like new after years of use