Maytronics Spring Cartridge Filter, Large | 9991408-R4 Applied Bio Durable Construction: Built with heavy-duty

Durable Construction: Built with heavy-duty galvanized or stainless steel components for maximum longevity

It helps restore smooth handle movement and proper sealing

but more importantly it exposes internal components to weather and debris

headers can crack from stress or chemical exposure

Maytronics Spring Cartridge Filter, Large | 9991408-R4 Applied Bio Durable Construction: Built with heavy-dutyWhat This Part Is Used For This large spring cartridge filter installs inside compatible Maytronics robotic pool cleaners. It forms part of the internal filtration system that captures debris during automated cleaning cycles. The panel is removable for rinsing and routine maintenance. Why This Part Matters Worn or clogged filter panels reduce suction and limit cleaning performance. Damaged filter media allows debris to reenter the pool. Replacing the