Metric bulkheads

[beastium]

I have a tank with 37mm (1-7/16") and 30mm (just under 1-3/16") holes.
I can't seem to find metric bulkheads, and I'm wondering if I can use the next size down in imperial sized bulkheads without issue.

Any advice would be appreciated!

 

[Water Dog]

For the 37mm hole, you can use a 3/4” ABS bulkhead. For the 30mm hole, you can use a 1/2” ABS bulkhead.

For reference, see this BRS bulkhead sizing guide and it’s chart below...

https://www.bulkreefsupply.com/content/post/selecting-the-correct-bulkhead

 

[Bj’s Reef]

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