Dyna-Vac dust collection unit designed to provide suction for 3-4 work positions, simultaneously. Powered by a 3/4 HP ball bearing, capacitor start, industrially rated brushless motor. The model 77DC provides cost effective dust extraction with state-of-the-art drum cartridge filter technology to capture dry dust particles as small as 0.5 microns. The powerful 3/4 HP motor and blower wheel is rated to generate 600CFM (cubic feet per minute) through the inlets provided. The unit is finished in a baked, durable coating, runs on 115V/60HZ and ships complete with switch and box type silencer.