Chrome plated steel construction ensures that the unit will resist abuse and the industrial gaskets and seals ensure that the vacuum cleaner will always be leak free.. These units are equipped with a true ULPA Filter (U15) located downstream of the motor. These units are EMI/RFI Shielded and will not disrupt computers and sensivite electronic equipment. These units are also static free and ESD safe. For critical static control applications requiring zero voltage potential a special TELECOM package is available (conductive wheels are incorporated on the vacuum cleaner and a special tool kit is provided). These units are cleanroom compatible and can be used in the pharmaceutical industry. These units were designed for general cleanup in contamination controlled environments. These are dry only vacuum cleaners. This unit is also equipped with a dual speed control that allows the operator to regulate the suction. It also incorporates a thermo-protector which prevents the motor from overheating if there is a blockage in a nozzle or hose. All of our ULPA vacuum cleaners are Aerosol Leak Tested before leaving our facility.