Bulkhead size

[Bioguy7]

I am looking to buy 2 bulkheads for my tank which has holes of 2" diameter. I got this info from the manufacturer and it seems none of them work for me. Can I get the 1" bulkhead and use some kind of washer/adapter to fill in the extra gap?

bulkhead Size: 1/2" = Hole Size: 1 1/8" or 1 1/4"

bulkhead Size: 3/4" = Hole Size: 1 1/2"

bulkhead Size: 1" = Hole Size: 1 3/4"

bulkhead Size: 1 1/2" = Hole Size: 2 3/8"

bulkhead Size: 2" = Hole Size: 2 7/8"

Thanks for help.



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[blowmecius]

One inch abs bulkhead fits 1.65 to 2.67 inch hole. A 1 1/4 inch abs might fit but that is a tight fit and an odd size uness for some reason you need the extra 1/4 inch. Schedule 80 1 inch will also work.

https://www.bulkreefsupply.com/instructions/article/selecting-the-correct-bulkhead