Specification Patented Aircomfort harness technology reducing wearer perspiration by up to 25% over closed-back systems Five unique harness adjustments for an individualized, secure, and cool fit A four-level filtration system including a HEPA filter cartridge, contributing to improved indoor air quality (IAQ) Maximize Cleaning Speed and Efficiency Providing a faster and more cost-effective alternative to traditional upright vacuums, Tornado's PV 6 Pac-Vac backpack vacuum is one of the most powerful, easy-to-use and quiet backpack vacuums you'll ever use. Designed for superior operator comfort and increased productivity, this super-quiet unit eliminates the need to bend over as required with traditional upright vacuums. Not only do workers expend less effort doing their jobs, getting in and out of tight or confined spaces becomes a breeze. As a result, cleaning productivity dramatically increases to over 7,000 square feet per hour.Comfortable Design The PV 6 Pac-Vac delivers features for maximum comfort including a lightweight and durable injection molded housing designed to eliminate heat transfer from the motor to the operator's back. The PV 6 also boasts heavy-duty padded nylon shoulder straps for a more secure fit.Minimize Service Needs With 1.9 HP, Tornado's PV 6 Pac-Vac achieves static lift of 90 and airflow of 120 CFM at a super-quiet 71 decibels. The PV 6 has a lower cost of ownership over the life of the product compared to upright vacuums, thanks to minimal service requirements. And what's more is the PV 6 has the ability to recover paperclips and other debris that upright vacuum cleaners often struggle with.Attention to Air-Quality Reducing and minimizing dust particles and contaminants are critical to healthy buildings. While vacuuming is an extremely effective tool in removing potential allergens, use of the wrong machine can actually reintroduce contaminent back into the air. The PV 6 Pac-Vac's true HEPA filtration (99.97% efficiency at 0.3 microns) is designed to contain fine particulate and dust, improving indoor air quality and reducing the risk associated with the redistribution of potentially harmful particles and allergens.