12" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 22 5/8"] Color_R-4.2 Yellow + Product Details Size - High Quality High quality RG1620AL Condensate Pump Accessories

+ Product Details Size - 25"w X 34"h is the size for the duct opening measurement only

Available in both standard and custom sizes

+ Product Details Size - 18"w X 6"h is the size for the duct opening measurement only

+ Product Details Size - 10"w X 32"h is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 19 3/4" x 1"

12" X 20" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 14 5 8" X 22 5 8"] Color_R 4.2 Yellow + Product Details Size High Quality High quality RG1620AL Condensate Pump Accessories + Product Details Size 25"w X 34"h is the size for the duct opening measurement only Available in both standard and custom sizes