What size are these holes

[winsbxnyc]

What size holes are these so I can get the proper bulkheads I know one is 1 inch the other ones smaller

 

[duke62]

Ummm you need to put a tape measure across the hole to get a size. No one will be able to tell just by a pic

 

[masterswimmer]

Who makes that tank and what volume is it (dimensions of tank)?

Most likely 1" overflow and 3/4" return.

 

[Dogbed]

3/8"

 

[vio]

Who makes that tank and what volume is it (dimensions of tank)?

Most likely 1" overflow and 3/4" return.

i think u right.

 

[Alexm8856]

Measuring tape would be your best bet it's the best tool

 

[Kworker]

measuring tape would be your best bet it's the best tool

+1