RhinoVac RV8 Concrete Vacuum with Pre SeparatorThis vacuum comes with a built in pre separator and has a 3 year warranty like all NewGrind machinery. Super compact and sleek design Heavy duty all aluminum diamond plate construction for durability Specialty urethane wheels that wont puncture Easy access over cords, thresholds, and rough terrain Built in cyclone pre separator to filter 90 95% of dust directly into the Lexan barrel Bypasses your HEPA filter thus extending its life Reduces frequency