I've never hung a door before but our existing fitted doors are 2010mm x 823 but the closest I can find are 2040 x 826, now 826 shaved down 3mm to 823 no problem i would've thought but i'm worried about removing the 30mm(15mm top & 15mm bottom) to get it down from 2040 to 2010 as I was looking at Pressed Hardboard & don't know if i'd be taking to much off.
Cheers
Ken
Cheers
Ken