18" X 12" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 20 5/8" X 14 5/8"] Color_Aluminum the actual front end outer Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

the actual front end outer dimensions are 10" in diameter

no scuff powder coat durable finish

75" Deep - Will Fit All Garrage Doors - Insulated And Non Insulated Garrage Doors [The Hole In The Door SHould Be: 15 ¼ x 9 ¾]

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

18" X 12" Steel Return Air Filter Grille for 1" Filter Removable Frame * Filter Included * [Outer Dimensions: 20 5 8" X 14 5 8"] Color_Aluminum the actual front end outer Compatible With Duct 7in Applications This sheet metal DDAG A 1212 the actual front end outer dimensions are 10" in diameter no scuff powder coat durable finish