Generic Cartridge Filter Lid O-Ring for C900, 355050422, 39006000 tube-thickness_.145" The Nature2 Express is a

The Nature2 Express is a simple mineral dispensing sanitizing system for inground and aboveground swimming pools that reduces the need for large amounts of chlorine

a 5-foot suction tube 7/8 inch OD

It also includes (1) All-Purpose Filter Bag

and beach sand

This is a Schedule 80 Blind Flange for 2 inch pipe

Generic Cartridge Filter Lid O-Ring for C900, 355050422, 39006000 tube-thickness_.145" The Nature2 Express is aThis is a Generic Filter Lid O Ring O 240 replacement with dimensions for several pool filters. The dimensions work with Hayward C900, AquaFlo 92200180, Martec Sonfarrel 320110, Pentair American 39006000, Premier 31358, Sta Rite U 9228, and Sta Rite Swimquip 35505042.