Pentair UltraFlow Prefilter Lid

Pentair UltraFlow Prefilter Lid (R39301799)

The R39301799 is the genuine Pentair replacement prefilter lid for the UltraFlow pump strainer housing. The clear transparent design allows quick visual inspection of the basket fill level without removing the lid. Replace when cracked or when threads are stripped, as a damaged lid cannot maintain the airtight seal needed for reliable pump priming.