The Biggest Blower on the Market! This tube mount backpack blower features an incredible 79.9 cc 2-stroke engine with a lightweight carbon fiber frame. An oversized pleated paper main filter and foam prefilter allow for use in high-dust areas, plus tool-less latches for easy in-field maintenance. Features an 83.8 oz fuel tank, padded backpack straps and backrest for comfort. Vented backpack frame draws air across the user's back to keep user cool in hot weather and a block-off plate for use in cooler weather. Tube-mount. Air volume 1071 cfm, 211 mph, 44N Blowing force. 24.5 lb.