... and dust collecting together, 3350W stonger power, stable performance Compound Air Duct Cleaning Key Features:1.QX-3510CS is a newly ... takes a single person to operate for cleaning the central air conditioning duct systems in hotels, restaurant, shower center, super market ... .9.Equipment Measurements: 380*380*750(mm)10.Weight: 50kg Air Duct Cleaning, Ventilation Duct Cleaner, Air Pipe Cleaning