DuctMaster Air Duct Cleaning System With Accessories The all new DuctMaster III cleans air ducts efficiently with the ease of the remote control. No cable to worry about. The Motor is in the brush head. It puts the power where you need it. It comes with all the accessories you need for duct cleaning and dryer vent cleaning. NOTE: Duct opening must be a minimum of 4" for this brush/motor/hose assembly to fit into opening.
The DuctMaster brush motor itself, even under maximum load for extended periods will never reach the ignition point or melting point for plastic duct material, which must meet UL Class 2 standards for fire safety of 407 degrees F. This has been field tested for safe use in flexible ducts.