Maytronics Cartridge Door Kit, for Supreme M4 M5 | 9991047-ASSY Torch Waterway Plastics has built a

Waterway Plastics has built a solid reputation for engineering parts that withstand demanding environments

The flow rate is listed as 1800 GPH in the title

Choose Hammer-Head for parts that align with industry standards and support from a brand with deep pool industry experience

Installation approach: Comes with a straightforward mounting plan that leverages existing attachment points in your system

this door provides a sleek

Maytronics Cartridge Door Kit, for Supreme M4 M5 | 9991047-ASSY Torch Waterway Plastics has built aWhat This Part Is Used For This cartridge door kit installs on compatible Maytronics Supreme M4 and M5 robotic pool cleaners. It forms the access door that secures the internal cartridge filter assembly during operation. The door maintains proper sealing and debris containment while the cleaner is running. Why This Part Matters A cracked or warped cartridge door can reduce suction and allow debris to bypass the filtration chamber. Poor sealing may