Folding Systems Pemko FIF_/275A Folding SystemFor interior and exterior doors up to 275lb and 48" wide Pemko HF_/100A Folding SystemFor wood folding closet doors/dividers up to 100 lbs, 24"… Pemko PIF_/165A Folding SystemFor folding doors/room dividers up to 165 lbs, 36" w x 106" h