SPECIFICATIONS
Duct insulation sleeve works as an energy-efficient insulation blanket suitable for heating, ventilation, and air conditioning systems. Specifically designed to insulate rigid or semi-rigid round ducts, it is an excellent method for reducing heat or cool loss and condensation build-up.

FEATURES & BENEFITS
Made of a thick glass fiber insulating blanket, jacketed by a fiberglass reinforced metalized vapor barrier.R-Value = 4.2
Reduces heat loss and helps prevent condensation
Meets spec for National Building Code

OTHER INFORMATION
Fits 4-inch diameter round ductwork