Finding the right door frame depth

[Logan]

I’m building a stud wall with a door frame using 63mm (2”x3”) CLS and 12.5mm plasterboard each side.

 

Does anyone know where I can get a door frame at 88mm (or close) depth to finish flush with the plasterboard?

 

Had a look online but can’t find any. The door is 2040mm x 826mm.

 

Thanks in advance.

 

Edited October 29, 2023 by Logan