High efficiency filtration traps 99.6% of contaminants down to 0.3 microns for improved indoor air quality. Power, reliability, value - with 41% more cleaning power. Vac Motor: High performance,2-stage, 1.6 hp, 1200 watts,90". Brush Speed: 5400 brush contacts per minute, 2700 rpm. Dust Bag: Triple layer w/323"[3] enclosed, top-loading.