Founded in Toronto in 1934 as a feed-and-seed store, Dundas Jafine has grown into a family-run manufacturer of air distribution and dryer-venting products. Now led by fourth-generation Jafines and based in Brampton, the company has spent more than 90 years developing practical venting solutions, including its ProConnect tool-free dryer connector and soffit dryer vent. Its products are manufactured and distributed from facilities in Canada and the United States and are sold across North America.
UL 2158A
UL 181
UL 181B
SysTech Design IncFounded in 1985, SysTech Design Inc. is a second-generation family-owned company known for practical industrial ventilation solutions. From its Exton base, the company takes responsibility for projects across the United States and Canada, combining more than 120 years of team experience with field analysis, installation, and ongoing support for industrial facilities.221330EXTON, PA
Duro Dyne CorporationFounded in 1952, Duro Dyne Corporation manufactures sheet metal accessories and equipment for the heating, ventilating, and air-conditioning industry. Headquartered in Long Island, New York, it also has manufacturing and warehousing facilities in Ohio, Colorado, and Canada. Its long-standing product innovations include flexible duct connectors and hand-held pinspotter machines.BAY SHORE, NY
Duravent GroupBuilt from industrial names dating back to 1901, Duravent Group manufactures venting and air-control systems for residential and commercial applications. Formed in 2021 through the combination of DuraVent and Hart & Cooley, the Detroit-headquartered company brings 14 established brands together, with manufacturing and distribution operations across North America. Its commercial design team develops in-house, code-compliant exhaust solutions, including systems for demanding projects such as semiconductor facilities.ALBANY, NY
Mestek Commercial Damper and Louver Group (MCDLG)From its Wyalusing, Pennsylvania base, Mestek Commercial Damper and Louver Group brings together several HVAC brands to manufacture air-control and ventilation products for construction projects. With more than 50 years in the HVAC industry, MCDLG makes its products in the United States and supports the field through AMCA-certified offerings, UL Life Safety products, and continuing-education courses. It is a division of Mestek Inc.WYALUSING, PA