Return Air Duct, 3642, 18" x 10', R4.2 (UPC-04-3642, Unico)
This is an acoustical R4.2 flex duct for the M3642 return air. It comes in 18"diameter and 10' long.
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.