Pentair Bulkhead Bottom | Quad D.E. Filter | 178575Z Spa Care Chemical Bundles Fits all currently manufactured steel

Fits all currently manufactured steel and polymer walls

400 JXi and LXi Low NOx Heaters

covering models HC-3315

24" height resin above ground pool fence Premium Kit B

and 2‑1/2 HP models

Pentair Bulkhead Bottom | Quad D.E. Filter | 178575Z Spa Care Chemical Bundles Fits all currently manufactured steelThe Pentair Bulkhead Bottom (178575Z) is the OEM replacement bottom bulkhead fitting for the Pentair Quad D. E. Filter series, providing a secure, leak free connection at the base of the filter tank. The bulkhead bottom seals the lower tank port on Quad D. E. Filters, maintaining system pressure integrity and preventing water loss at the filter base. A failed or cracked bulkhead fitting at this position compromises filtration performance and can