Is this fitting too big?

[FishPersonFL]

Hi
I'm looking at this bulkhead: https://www.bulkreefsupply.com/bulk...-side-1-3c30bc3ec05967d33995f258b184fabb.html
The predrilled hole is 1 3/8" Diameter. Is the 1" bulkhead too large? The reviews are saying these are larger than normal bulkheads.
TIA

 

[19Mateo83]

1 3/8 is 1.375. Look at the minimum sizes on the chart and go from there.

 

[FishPersonFL]

TY!.. I just found that chart also, right after posting this. I'll have to get an ABS since a PVC would allow only 1/2", bleh.