12" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Drop Ceilings / Steel + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 18" or 18" x 12" duct opening (measured at the opening)

+ Product Details Size – 28"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 20"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 25"h is the size for the duct opening measurement only

+ Product Details Size - 32"w X 36"h is the size for the duct opening measurement only

12" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIRFLOW LINEAR BAR GRILLES Drop Ceilings Steel + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Perfect Fit & Easy Sizing Designed for a 12" x 18" or 18" x 12" duct opening (measured at the opening) + Product Details Size – 28"w X 24"h is the size for the duct opening measurement only