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Thru-Hull 1/2", Mushroom, Threaded

Part #: Z4564

Technical Support

Through Hull Evolution - Caution Vintage Catalina Owners!
To change or not to change? Don't let that question keep you up at night, but pray it is not water waking you in the morning.
Pipe Sizes and Why They Are So Confusing
Why doesn't my 3/8" NPT fitting measure 3/8"?

May we also suggest

1/2" Ball Valve
Thru-Hull Installation Kit