Waterway F.A.S. 1" Top Access Air Control [Textured Scalloped Assembly] (660-3581) defilters The spa-and-pool versatility gives this

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 damaged waterfall components

That keeps the repair focused while restoring one of the most important working components

A basket like this is useful because it captures debris before it reaches deeper circulation components

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 The spa-and-pool versatility gives thisThe 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,