Aluminum Supply Tubing, 2.5" x 25', R4.2, 3/bx (UPC-225-R4-3, Unico)
This is a 2.5" flexible aluminum duct insulated to R4. It comes in box quantity of 3 25' lengths.
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.