1.5 " hole or a 1.5 " bulkhead to fit 1.5" PVC
there is a differenace.
1.5 " hole will fit a 3/4" bulkhead
and a 1.5 " bulkhead you need a 2-3/8" hole
but for plumbing a 1.5 PVC that is plenty for it .
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180 starfire front, LPS, millipora
Doesn't matter how much you have been reading until you take the plunge.
You don't know as much as you think.
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