Travis Industries Draft Flow Vacuum Switch 90-0791 Type_Vacuum Switch but you need a lot

but you need a lot less of it

which affects how the cartridge seats

and clogs your filter

12V or 120AC Adaptors

Vanishing Act isn't optional — it's required

Travis Industries Draft Flow Vacuum Switch 90-0791 Type_Vacuum Switch but you need a lotTravis Industries Draft Flow Vacuum Switch 90 0791 Overview The Travis Industries draft flow vacuum switch was designed for pellet stoves. The draft flow vacuum switch is a safety component that monitors the performance of the exhaust inducer fan and your pellet stove or inserts ventilation system. It monitors the pressure inside of the combustion chamber and shuts off your pellet stove or insert if the pressure gets too high. Whats in the Box 1 x