Waterway F.A.S. 1" Top Access Air Control [Textured Scalloped Assembly] (660-3581) defilters Supports cleaner and more dependable

Supports cleaner and more dependable remote control access

The spa-and-pool versatility gives this cartridge practical value because some filter cartridges serve multiple water system types while still requiring an exact cross-reference match

or failed temperature sensors helps restore dependable monitoring

The DEX2421J2 kit is a practical hardware replacement for compatible Hayward Pro-Grid filters that need renewed clamp-ring fastening and cleaner long-term retention

Waterway F.A.S. 1" Top Access Air Control [Textured Scalloped Assembly] (660-3581) defilters Supports cleaner and more dependableThe Waterway F. A. S. 1" Top Access Air Control [Textured Scalloped Assembly] (660 3581) is a Waterway Plastics replacement component designed to help manage air flow through compatible spa air control systems. Built for the listed configuration and part number 660 3581, this component helps make targeted equipment repairs easier without replacing a larger assembly unnecessarily. It is useful when the existing air control component is cracked,