Heavy duty powder coated body and detachable recovery tank. Equipped with a true HEPA Filter (H14). This unit is static dissipating and conductive (Category 3 - Zone 22 (Dust)) and can be used for general maintenance. Large Reverse Purge Cartridge - 20 ft² (18.600 cm²) - included. All of our HEPA vacuum clenaers are Aerosol Leak Tested before leaving our facility.