Screw on unions that attach the Harward In-Line Filter to your existing plumbing. Even if your existing installation has filter unions it is best to replace to guarantee compatability and prevent leakage.
SpaGuts P/N: 40-200-1000
This item comes with a 90 day limited warranty, and is non-returnable.
[keywards 40-950-1000, 409501000, 402001000]