Hi, I'm about to start putting a stud wall up in what was an archway to accomodate a set of double doors. The doors I have are 1981mm(h) 1524mm(w) 35mm(D). I have a 10mm Pairmaker. The door lining is 30mm. So just want to check how big I should make the gap in the stud wall. I'm told that 3mm clearance on each edge is what I need so.. Width: 1524 Both doors plus 10 Pairmaker plus 60 Door lining plus 9mm Clearance on both sides and between the two doors. 1603mm total width. Height: 1981 Door height plus 30 Door Lining 6 Clearance Plus floor covering yet to be decided. Are my calculations correct or do I need to add an extra 3mm on the width (2x3mm on the meeting edges or the doors)? Or am I way off