Hi new member, stumbled across the site.. liking what I see

Wondering if anyone could be nice enough to help with a little question I have..
I've been on the look out for a new drivers side door for my 5door golf. I've been ringing around to try and get a colour matched one (code is LC6P). Been offered one but he says it's from a 3door model and would fit. But i'm in two minds as I always assumed that the doors from a 3 door would be slightly different from that of a 5? as VW have two different parts numbers for them according to ETKA. Is that correct or am I just being blonde

Hope you can help.. Thanks