Big Blue Winter Blower, delivering 670 air watts of power, is strong enough to blow out main drains and multiple return lines in seconds. The familiar "no-frills" design with an upgraded Ametek motor assures that Big Blue will be appreciated by those familiar with early model Mighty Vac blowers. This blower is approved for use with Winter Duck Plugs and is an essential tool for increasingly popular "no drain" winterizations where the water level is kept above the return fittings. Designed specifically for winter blowing applications Big Blue also works as a liner vac.