Pentair Light Fixture Housing, 3/4", Back Concrete, CN5 | 78210700 Spa Step Parts This knob helps secure the

This knob helps secure the upper portion of the filter housing so the filter can seal properly during operation

it helps keep water moving correctly and ensures reliable operation

18 square inch cover size

Pentair 154697 Kit Triton Closure is a replacement closure kit for compatible Pentair Triton sand filters

Pentair Light Fixture Housing, 3/4", Back Concrete, CN5 | 78210700 Spa Step Parts This knob helps secure theWhat This Part Is Used For Pentair 78210700 Fix Housing 3 4in, CN5, Back Conc is a replacement housing used in compatible Pentair fitting assemblies. It supports internal components and maintains secure plumbing connections. Why This Part Matters A worn or cracked housing can lead to circulation problems and water intrusion. Replacing it restores proper fit and helps maintain consistent system performance. It also protects adjacent surfaces from leak