18" X 16" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES tool bag actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 36 5/8" width X 28 5/8" height

} + Product Details Size & Compatibility - The size of a boot register end is 12" X 6" X 7" galvanized floor boot end center 26-gauge

+ Product Details Size - 8"w X 36"h X 2"d (for duct opening measurement only)

+ Product Details Size & Compatibilty - The 8" to 7" round metal pipe reducer & increaser 30 gauge is compatible with duct 8" to 7"

+ Product Details Size - 6"w X 6"h is the size for the duct opening measurement only

18" X 16" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIRFLOW LINEAR BAR GRILLES tool bag actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 36 5 8" width X 28 5 8" height } + Product Details Size & Compatibility The size of a boot register end is 12" X 6" X 7" galvanized floor boot end center 26 gauge