3M
Universal Duct Insulator
$12.97

UDI

Heating, Venting & Cooling

The Universal Duct Insulator for Evaporative Coolers is a winterizing duct plug that is made of R-25 PVC material sealed in a vinyl covering. The insulator is easy to install and is held in place by its own friction fit. For use with evaporative coolers with 13 - 20 in. ducts.

  • For use with evaporative coolers with 13 - 20 in. ducts
  • Protects evaporative cooler motors from damage due to condensation during cold winter months
  • Keeps cold air, drafts and noise out to help you save on energy costs
  • PVC material provides an R-25 insulation value
  • Easy installation
  • Stays in place through its own friction fit
  • Made in USA
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