34" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 24 5/8"] Color_White With a 5" diameter for Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

With a 5" diameter for the duct opening measurement

+ Product Details Size - 25"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 24"w X 32"h is the size for the duct opening measurement only

[Outer Dimensions: 26

3 * Insulation density is 30kgs/CBM = 0

34" X 22" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 36 5 8" X 24 5 8"] Color_White With a 5" diameter for Compatible With Duct 7in Applications This sheet metal DDAG A 1212 With a 5" diameter for the duct opening measurement + Product Details Size 25"w X 20"h is the size for the duct opening measurement only