Galvanized Duct, 10" x 5' 28GA 1/bx (USM-13, Unico)
This is 10" diameter, 28 gauge galvanized metal round snap-lock pipe. They come 1 per box - 5' length.
The Unico System uses less than one-third of the space in the built environment than a traditional system. It can deliver up to 9 tons of air conditioning in the same space as a 3-ton traditional unit.