This 3 inch (7.6cm) flexible duct tubing is UL listed and is constructed of heavy mil black PVC. It is intended for use in conjunction with the Wall Duct Boxes - the 4x8 and 4x4 boxes that are for use with the HiFlo and HiFlo Lite Fan Units. This tubing will connect to the exhaust end of the rough-in box and carry the heated air inside the walls or ceiling to vent to another area in the home.
UL Listed to Meet Most Code Requirments
Can be used in 4 inch Frame Walls
For Use with the HiFlo and HiFlo Lite Wall Duct Boxes
The Premier team has been stellar and attentive to every single need we have had and were on site during the entire construction of our home to insure first class install and service.