Company: CertainTeed

Product: Glass Master SG-420

Description: This product fabricates high-quality fiberglass spiral ducts with speed and accuracy. Its four drive rollers and ¾-hp motor provide the necessary grip and power to quickly pull duct board through the 21 tools required to form spiral duct liner. Precision-ground and hardened tool blades generate clean grooves and consistent contours and duct dimensions. It can be easily adapted to groove 1-, 1½-, and 2-inch boards. Its square duct tool holders include a measuring tab for accurate groove spacing. Quick-release clamps on all tools allow for fast repositioning. Standard features include a foot-actuated switch for safe operation, four swivel casters, and a durable powder coat finish.