The Polaris P39 Pressure-Side Automatic Pool Cleaner has the most vacuum power of any Polaris Pressure Pool Cleaner. It features a triple Venturi jet design in its throat, so you get maximum suction for a deeper clean. The Polaris P39 includes the TailSweep Pro scrubber, an advanced sweep hose enhancement that blows debris out of corners and hard to reach places, while also keeping water from spraying outside the pool. Also included are three bonus Sweep Hose Scrubbers for extra value. The Polaris P39 is easy to install, connecting to a dedicated pressure line and requires a separate booster pump for operation which is sold separately. Equipped with a dual chamber SuperBag, it's able to pick up more debris to supplement your pool's filtration system by circulating an additional 40 gallons.