32" X 30" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 34 5/8" X 32 5/8"] 18in diameter + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 14"w X 28"h is the size for the duct opening measurement only

Tailored for Your Needs: Specifically suited for 24x24 lay-in diffusers

+ Product Details Size – 14"w X 16"h is the size for the duct opening measurement only

Pressure Rating: 2100 to 7000 PSI

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

32" X 30" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 34 5 8" X 32 5 8"] 18in diameter + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 14"w X 28"h is the size for the duct opening measurement only Tailored for Your Needs: Specifically suited for 24x24 lay in diffusers