Custom Fold-A-Side and Accordian Door Hardware. For 1" to 1-3/8" Folding Doors up to 50 lbs. each (max 2 doors to a jamb). For 1" to 1-3/8" Accordian Doors up to 30 lbs. each (more than two doors to a jamb). Jump proof Aluminum Track: has slots at four foot intervals for inserting hangers without having to cut track short of opening.