8" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 10 5/8" X 22 5/8"] Grille + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 22"w X 26"h is the size for the duct opening measurement only

3/8" - 4223 PSI

+ Product Description Introducing HVAC Premium's Aluminum Adjustable Return Grill – the key to enhanced air control and energy efficiency

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+ Product Details Size - 34"w X 12"h is the size for the duct opening measurement only

8" X 20" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 10 5 8" X 22 5 8"] Grille + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 22"w X 26"h is the size for the duct opening measurement only 3 8" 4223 PSI