18" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Color_White + Product Details Size & Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size & Compatibilty - The 6" to 3" round metal pipe reducer & increaser 30 gauge is compatible with duct 6" to 3"

attractive finishes that stand up to wear

+ Product Details Size – 6"w X 16"h or 16" x 6" is the size for the duct opening measurement only

+ Product Details Size - 24"w X 16"h X 2"d (for duct opening measurement only)

With a solid base for stability

18" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIRFLOW LINEAR BAR GRILLES Color_White + Product Details Size & Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size & Compatibilty The 6" to 3" round metal pipe reducer & increaser 30 gauge is compatible with duct 6" to 3" attractive finishes that stand up to wear