This 3" (7.6cm) flexible duct tubing is insulated and UL listed.  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.

      Features

• 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

General Specifications

Dimensions:       3" (7.6cm) Inside Diameter & 25' (7.6m) 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.