Pictured below are the many different designs of openings possible with your new bifolds, as you can see it is possible to have from 2 (not shown below) to 8 bifolding doors. Bifolds come in various sizes and combinations. The general rule is, if you want all doors to slide to one side the most practical solution is to have an odd number of doors, three, five, seven etc. this will allow you to have a main door as a prime mover. The prime mover is a single opening door either attached to the other doors or to the frame itself, ideal for the days you need access to the garden but don’t want or need more than one door to open. You will find that because of the hinge mechanisms on bifolding doors if you have an even number say four doors, then to close them on one side the doors will need to close two at a time in a V shape. The alternative is one door a prime mover which would have to stay one side (as shown below) with the three remaining doors closing to the opposite side. Six doors can work well, if the opening is large enough, three doors to each side.