Polaris 3900 Sport SuperBag | 39-310 Surface Cleaners Even an O-ring that looks

Even an O-ring that looks intact can have micro-deformations that allow air to enter the suction side

Regulator cap x1

Aluminum back for extra stiffness and scrubbing power

and Hayward pool and spa skimmers

The Unicel C-9494 is a 9000 Series 100 sq

Polaris 3900 Sport SuperBag | 39-310 Surface Cleaners Even an O-ring that looksThe Polaris 39 310 SuperBag is a large, double chambered replacement filtration bag designed specifically for Polaris 3900 sport or P39 pressure side vac sweep pool cleaners. The 39 310 SuperBag is gray in color and expands to hold up to 5 liters of large and small debris within the dual zippered chambers, giving almost twice as much debris capacity as a single chamber Polaris bag. Features and Benefits: Double chambered filtration bag with 5 liters