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Duct maker


CertainTeed, Mississauga, Ont., expands its line of duct board grooving equipment with the Glass Master SG-420 duct board grooving machine. The SG-420’s four drive rollers and three-quarter horsepower motor provide the necessary grip and power to pull duct board through the 21 tools required to form spiral duct liner. It can be easily adapted to groove one-inch, one-and-a-half-inch, and two-inch boards. Standard features include a foot-actuated switch for safe operation, four swivel casters and a durable powder coat finish.



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