The Aztec UltraVac is a propane powered concrete dust vacuum system, offering CFM with a 28 sqft HEPA MicroClean filter. All of Aztec’s propane machines are powered by the CE, EPA, CARB, LEED and GS-42 certified Kawasaki 603cc engine, as part of the WorkSmart system. Featuring cord-free operation and MicroClean filtration. Starter and specialty packages are available for chemicals, diamonds, propane vacuums and hand grinders.