25" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 27 5/8" X 22 5/8"] w12h12 + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 10"w X 24"h is the size for the duct opening measurement only

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

The total outer size of this grille is the listed size plus 1

+ Product Details Size – 24"w X 14"h is the size for the duct opening measurement only

this HVAC vent duct cover ensures durability and reliability

25" X 20" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 27 5 8" X 22 5 8"] w12h12 + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 10"w X 24"h is the size for the duct opening measurement only + Product Details Size 30"w X 16"h is the size for the duct opening measurement only