Hayward C-Spa XI Thermostat Knob Black (CZXTSK2003) airswitches A lid with O-ring is

A lid with O-ring is useful because it helps restore both the cover and the sealing surface at the same time

A cleaner bag is useful because it helps collect leaves and other debris during operation

or a more complete drivetrain refresh

The 2 inch by 200 foot marked boxed format is well suited for service professionals

or no longer communicating correctly with the system

Hayward C-Spa XI Thermostat Knob Black (CZXTSK2003) airswitches A lid with O-ring isThis black thermostat knob is a replacement control part for compatible Hayward C Spa XI heater applications. A damaged or missing knob can make temperature adjustment difficult and reduce usability at the equipment pad. Replacing it gives the control panel a cleaner, more functional feel during routine operation. Replacement thermostat knob for compatible C Spa XI heaters Helps restore manual temperature adjustment Black finish for matching control