30" X 30" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged- [Outer Dimensions: 32 5/8" X 32 5/8"] Color_Black Actual Filter Size – 11 Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Actual Filter Size – 11 3/4"w x 9 3/4" x 1"

[Outer Dimensions: 14

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 24" OR 24" x 20" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 24" duct opening (measured at the opening)

+ Product Details Size - 20"w X 24"h is the size for the duct opening measurement only

30" X 30" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 32 5 8" X 32 5 8"] Color_Black Actual Filter Size – 11 Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Actual Filter Size – 11 3 4"w x 9 3 4" x 1" [Outer Dimensions: 14