This company has introduced Ultra*Duct¿ Gold, a rigid board designed for hvac duct systems with a new air stream facing the significantly reduces the amount nuisance dust generated during fabrication compared to other standard duct boards, according to the manufacturer. Ultra*Duct Gold's mat air stream also adds strength to the board while helping to improve handling.

CertainTeed Corp., P.O. Box 860, Valley Forge, PA 19482-0101; (800) 233-8990.