Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg An overlay is useful because

An overlay is useful because it restores the visible button labels and surface appearance of the topside panel

FC-3129 Micro-Klean filter cartridge for compatible applications

Compression nuts are useful because they help secure related tubing and feeder fittings

Supports cleaner and more dependable through-wall plumbing connection

The white deluxe scallop face also keeps the finished look crisp and polished

Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg An overlay is useful becauseThe Hayward air relief O ring set is designed for compatible SwimClear and Pro Grid filter applications where the air relief assembly needs dependable sealing. O rings like these are useful because they help maintain a cleaner seal at the air relief point, supporting more reliable filter serviceability and operation. This quantity two replacement is especially useful when the original O rings are flattened, brittle, cracked, or leaking. Replacing them