| It's bi-pass closet doors that have a different rough opening than bi-fold or standard doors. Bi-folds are framed same as a typical interior door. For double 24" doors, you would add 5" for the header size. With the trimmer or jack studs installed, that gives you 50" for your width. 82" is typically standard for height, but as handy states, it's dependent on your floor type and how high or low you want the doors off of the floor. 24"x2 = 48" + 5" for the header - 3" for trimmer/jack studs,(1-1/2" each side), = 50" width rough opening. 80" doors plus jamb = apprx 81" plus desired off of floor height. For carpet. typically 3/4", tile typically 1/2", laminate typically 3/8", etc., including the desired clearance. Here's a link that shows a typical framed opening with trimmer/jack studs supporting the header. |
Here is a link that might be useful: bi-fold r.o.
