Sound Seal Acoustical Pipe and Duct Lagging Flexible Noise Barrier: B-20 Lag / QFA-3 is a composite material featuring a flexible two-pound per square foot reinforced foil faced loaded vinyl noise barrier bonded to a 1” thick quilted fiberglass sound absorber.  Used to wrap noisy pipes, ducts, valves and fan housings.

• Easy to cut, wrap and install with matching lag tape
• Class A (or 1) flammability rating per ASTM E-84
• Standard roll is 54”wide x30’ long