ARB thickness from factory

[garwoodfire]

Hi all,
Can anyone tell me the standard factory T6.1 ARB thickness on a T28,T30,T32?
I’ve searched the threads but cannot find anything definitive

 

[Pewt]

I'm sure they are 26, 28 and 30mm but i maybe wrong ...H&R are 32mm

 

[The Bear78]

There is some info in this thread.