Astral Pool Millennium Drain Plug Assembly (4404220103) raypak The TC440-MB fit gives this

The TC440-MB fit gives this assembly practical value because standpipe components work best when they match the original internal layout closely

and TigerShark applications

Helps restore stronger air-side performance

Designed for compatible wall-return sealing

Replacing it with the correct 1

Astral Pool Millennium Drain Plug Assembly (4404220103) raypak The TC440-MB fit gives thisThe Astral Pool Millennium drain plug assembly is designed for compatible filter applications where the lower drain opening needs a complete closure component. A drain plug assembly is useful because it helps seal the filter during normal operation while preserving access for draining, winterizing, or maintenance when service is needed. This replacement is especially useful when the original assembly is leaking, stripped, cracked, or incomplete.