UltraPure Replacement Bulb [UPPHO] (3901850) astral Pool Tool part 121-R for

Pool Tool part 121-R for accurate replacement ordering

more predictable service cycle

Two-speed spa pumps are often practical where the system needs both stronger active operation and a lower-speed mode

Helps restore intended ultraviolet output

OEM Pentair/Sta-Rite drain body gasket

UltraPure Replacement Bulb [UPPHO] (3901850) astral Pool Tool part 121-R forUltraPure Replacement Bulb [UPPHO] (3901850) is a replacement bulb for compatible UltraPure UPPHO ozone system applications. Replacing the bulb at the proper service interval helps support consistent water quality equipment performance and keeps the ozone system working as intended. This UltraPure part is ideal for maintenance repairs where the existing bulb is expired, weak, or no longer operating correctly. Match the system model and part number