This 3" (7.6cm) flexible duct tubing is UL listed and is constructed of heavy mil black PVC. It is intended for use in conjunction with 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 exhaust end of rough-in box and carry the heated air inside the walls or ceiling to vent to another area in the home.
When using ducting, ensure to use a high quality HVAC sealing tape (not duct tape) to ensure there is no air leakage.
- UL Listed to Meet Most Code Requirments
Can be used in 4" Frame Walls
For Use with the HiFlo and HiFlo Lite Wall Duct Boxes
Excellent Flexibilty and Airflow
Dimensions: 3" (7.6cm) Inside Diameter & 10' (3m) in Length
Compatibility: Wall Duct Boxes - 4x4 & 4x8
Notes. Ensure to follow all code requirements and consult with HVAC or general contractors on your project to ensure that your work will pass inspections.