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Algae Prevention & Sanitizer Support — suppresses algae growth and preserves sanitizer effectiveness
Maintains optimal combustion efficiency and heat output
Premium PVC
UL 2017 listing: Safety compliance and trusted reliability
Shaft Seal Assembly: Precision replacement that restores the critical shaft seal
Hayward Star Clear Plus Locking Knob CX900G Cartridge Filter Berry Scent Algae Prevention & Sanitizer SupportHayward StarClear Plus Locking Knob CX900G Introducing the Hayward Star Clear Plus Locking Knob CX900G, a genuine replacement part that securely seals the top of Star Clear Plus cartridge filters for pools and spas. This locking knob is designed for C751, C900, and C1200 models and helps maintain crystal clear water by preventing lid loosening during backwash and cleaning cycles. Built to withstand chlorine, salt, and sun, it preserves filter
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