Ultra quiet machines, as low as 63 dBA, ensures safe sound levels. Passive dust control as standard, maintains indoor air quality. 90 degree flip up head, enables a safe ergonomic position when changing pad. Battery powered. High gloss results in an ultra quiet, ergonomic design. Burnishing speed: Min 100 fpm, Max 200 fpm; Transport speed (max): 240 fpm. Path width: 20"; Battery: (6) 6V, 240AH. Pad motor: 36V, 90 A, 3.6 hp max; Pad speed: 1875 rpm. Passive filtration: 95% @ 0.3 microns.