The DuraVac™ 152 combines rugged durability, quiet operation, superior filtration, and super-easy maneuverability to bring you top two-motor cleaning power for every carpet — low, high or no-pile at all! Only 69 dB(A) plus 5-stage filtration make the DuraVac 152 the right choice for hospitals and all other locations where clean, healthy air is important. Dust, bacteria and other dirt particles as small as 0.3 microns — more than 250 times smaller than a grain of sand —are trapped in the unique filter with nearly 99% efficiency.