A polypropylene monofilament duct hanger is available in two sizes for hanging flexible dust collection hose and HVAC ducting. DuctMaster support strap is available in 1.75- and 3-inch widths, in black and silver. It can be installed by nail onto wood-support members or by riveting or stapling around a steel rod. It meets Underwriters Laboratories' 723 burn-test requirements.

Nelco Products Inc., 22 Riverside Drive, Pembroke, MA 02359; (800) 346-3526; fax (781) 826-7344; www.nelcoproducts.com.