On 13/03/2019 18:38, R D S wrote:
I've something like this, it's made of wood,
https://www.diy.com/departments/4-pa.../176097_BQ.prd


I'm relocating it and could do with taking it down by an inch at each side.

I can't see a problem.....

Probably no problem at all. Some mass produced doors are not simply wood
but a glued up 'engineered wood' - a sort of blockboard for the 21st
century. So check the ends and check for glue lines.

TW