Duro Dyne provides Hanging Strap fabrics that are waterproof, grease,
oil & acid resistant, and have low smoke & flame development. Woven polypropylene duct hanging strap. Designed for hanging flexible duct, PVC vent duct, duct board systems, and many lighter weight steel duct applications. For maximum strength: put
the two ends together and
fold it over before securing
to the ceiling or joist.