6" TRUNK ADAPTER FOR 8" DUCTING, GAUGE:28, MATERIAL:GALVANIZED STEEL, Used to reduce duct run size Pre-assembled with boot clips for easy snap-in installation S and drive cleat connections (cleats sold separately) Galvanized steel construction for durability and rust prevention, DIMS:7"H X 8"W X 11"D, WEIGHT:1LBS, ORIGIN:USA, IN BULK