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 PurePowerLPG 600 Series engine, with lowest emissions in the industry; as part of the Aztec WorkSmartTM Concrete and Terrazzo Floor System. Featuring cord-free operation and MicroClean filtration. Starter and specialty packages are available for chemicals, diamonds, propane vacuums and hand grinders.