DiversiTech Smokeys Smoke Emitter with 2.5 Minute Burn Time, 1100 Cubic Ft. (Pack of 5)

Smoke emitter cartridges provide effective, low cost leak testing of heat exchangers, air ducts, tanks and boilers. Visual air balancing of HVAC systems. Cartridges produce clean, oil-free smoke through chemical reaction. Use also for fire drills as well as the placement and testing of smoke alarms/ detectors