Rated at 46

provided the vent pipes are clear and the switch itself is functional

Key Benefits: OEM Precision: Genuine Trane replacement part ensures exact fitment and factory-spec airflow performance

which is characterized by its specific bolt circle and flange dimensions

Enhanced System Stability: Maintains consistent evaporator superheat

Tjernlund Products DC4 Draft Control 321894-706 Rated at 46The Tjernlund DC4 Draft Control is an essential component for technicians managing combustion efficiency in residential and commercial heating systems. This 4 inch single acting draft control is precision engineered to maintain a consistent neutral draft within chimneys and vents, effectively counteracting fluctuations caused by changing barometric pressure, stack temperatures, and wind velocity. Fabricated from heavy duty corrosion resistant steel,