Backdraft dampers are intended to reduce backdrafts in HVAC systems. They're set up in exhaust ducts to avoid the reverse circulation of air. Backdraft dampers usually are mounted in spots where negative pressure could take place, such as bogs and kitchens. To put it differently, they control the level of https://erickariwk.wssblogs.com/36543575/detailed-notes-on-air-control-dampers-for-hot-climates