All Noise Control, sound damping ANC-WB21 Loaded Vinyl, Composite Noise Wrap Barrier – Acoustical Pipe & Duct Lag-Series, A composite material featuring a flexible one pound per square foot reinforced-foil faced loaded vinyl barrier bonded to a 1″ thick quilted fiberglass sound absorber. This product is use to wrap noisy pipes, ducts, valves, fan housings and more.