The Atrix VACBPAI400 Ergo Pro Aviation Backpack HEPA Vacuum with its industry specific 115V, 400 Hertz (Hz) motor is an excellent vacuum for aviation, airline and transportation applications. The VACBPAI400 has four levels of filtration which consists of an eight quart HEPA bag, cloth shake out bag, HEPA premotor filter, and an exhaust filter. This model is ergonomic, lightweight, and low profile making it comfortable for the professional cleaner to wear for a long duration in constricted spaces such as airline cabins. The 115V, 400 Hz, 1,100-watt motor provides plenty of cleaning power and produces 76 CFM. In addition, the ERGO PRO 400 Hertz backpack vacuum features industry standard 1.5" diameter vacuum hose and accessories.