30" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 32 5/8" X 22 5/8"] w20h20 + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

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

+ Product Description Enhance your ventilation system with our high-quality grilles and registers

+ Product Details Size – 30"w X 12"h is the size for the duct opening measurement only

With a 6" diameter for the duct opening measurement

Design – Fixed hinged for easy filter change & cleaning - uses a 1" thick filter

30" X 20" Steel Return Air Filter Grille for 1" Filter Fixed Hinged [Outer Dimensions: 32 5 8" X 22 5 8"] w20h20 + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 24"w X 10"h is the size for the duct opening measurement only + Product Description Enhance your ventilation system with our high quality grilles and registers