Hi, Thanks for your reply Dave. The wall which I am hoping to put the French doors into is a small one up, one down former barn. The lintel would be just lower than roof/gutter height. I'm not quite sure what you mean by a 'wall plate'. I have 2 galvanised steel lintels just over 2m lg which I hope to use to support etc. and once cemented into position I will probably face them off with a wood front cover. My initial thoughts are to go right through the wall twice from inside to out, and put a piece of rsj through.Then support them both on acros, before removing the stone and inserting the 2 galvy lintels side by side, into the wall. Anyway, I will wait with interest to have a look at your photos. Carl