Pentair ETi 400 Ignition Control Board Replacement Kit (475976) checkvalves Extension rings are especially practical

Extension rings are especially practical when the original upper trim structure has worn out or when the installation calls for the correct extension-style component to complete the opening

Designed for compatible electrical-control applications

Helps maintain reliable filtration system sealing

which supports proper heater behavior and overall system protection

Pentair ETi 400 Ignition Control Board Replacement Kit (475976) checkvalves Extension rings are especially practicalFor a clean repair, start with the correct part. Pentair ETi 400 Ignition Control Board Replacement Kit (475976) addresses a specific service point while preserving compatibility with the intended Pentair application. Ignition reliability depends on the control board communicating properly with the heaters ignition components, and this kit supports ETi 400 ignition system service. It is useful when the existing component shows wear, damage, age