Becker two-stage side channel blower (vacuum) with IE3 premium efficiency 4.8 HP, 230/460v, 60 Hz, 3-phase, TEFC (IP55) motor. Standard features include heavy duty construction, integrated inlet and discharge silencers for quiet operation, and a UL/CSA listed motor with class F insulation. This fully-assembled, high-quality blower package is complete with inlet filter and relief valve integrated in silencer stacks.