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| Tools & Home Improvement > Building Supplies > Building Materials > Roofing > Vents |
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| Product Description This state of the art duct consists of a flexible helix core made of 2 ply polyester laminate and corrosion resistant zinc coated wire. It is surrounded by a blanket of glass fibre insulation that helps to reduce heat and cool loss as well as jacketed by a heavy duty, fire retardant, black polyethylene vapor barrier.Dundas Jafine’s flexible insulated duct is UL / cUL 181 listed as a class 1 air duct and bears the mark on the product. Dundas Jafine BPC425R6 Insulated Flexible Duct with Black Jacket, 4-Inches by 25-Feet - Amazon.com Shipping Weight: 8.5 pounds | ||||||||
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