The CertainTeed SG-420 Duct Board Grooving Machine is a powerful, high-performance solution designed for swift and efficient duct board grooving. Driven by a robust 3/4 horsepower electric motor, it boasts four drive rollers that expertly guide the duct board through 21 precision-ground, hardened blades. This meticulous process consistently delivers well-defined contours and duct dimensions, rendering it highly suitable for a diverse range of applications. Notably, the SG-420 easily adapts to groove duct boards of various sizes, including 1 IN, 1.5 IN, and 2 IN. Achieving accurate positioning for different duct sizes is a straightforward and precise task when utilizing the SG-420. In addition to duct board grooving, the SG-420 possesses the versatility to groove spiral duct liner as well. It achieves this with a specialized set of blades designed explicitly for creating a spiral groove in the duct liner. This unique feature enables the duct liner to be readily formed into a spiral du...See Morect configuration. The SG-420 stands out as a versatile and robust machine, ideally suited for a multitude of applications. Its applications span commercial and residential construction projects, HVAC installation and maintenance tasks, and the fabrication of both duct boards and spiral ducts. For those seeking a high-performance duct board and spiral duct liner grooving machine, the CertainTeed SG-420 stands out as the perfect choice. Its combination of speed, efficiency, accuracy, and durability facilitates substantial time and cost savings while elevating the quality of ductwork. The SG-420 is a reliable solution designed to meet the diverse needs of users while ensuring customer satisfaction. See Less