Why is it that Oak Veneer MDF linings come in such stupid widths? I have a new timber frame build to do so therefore internal studs will be CLS 89mm, plus 12.5mm plasterboard and skim (approx 3mm) to either side, therefore overall wall thickness of 120mm. Howdens and others do oak veneer linings at 115mm or 138mm. The 115mm ones would be tight (allowing for deviations in CLS) even without skimming. 9mm board would work but not very good for walls. Even using 47 x 97mm (4 x 2 timber) for studs would give a finished wall of 128mm so still 10mm shy of using the larger width. How annoying, what do others think?