HEAVY DUTY - Bi-fold closet door hardware kit for 1" to 1 3/4" thick doors. COMMERCIAL GRADE - 75 pound capacity, heavy gauge steel pivot components hold heavy doors securely in place. PATENTED DESIGN - Heavy-duty tricycle hangers distribute weight equally and support heavy solid core door panels. EASY-TO-USE - 2-piece non-mortise hinge enables door panels to be installed or removed by simply lifting off. MADE IN USA - Manufactured in the United States. Highlights: Type: 4 doorOpening Size: 60"Door Size: 14-3/4"Adjustable jamb bracketSelf locating 'breathing' hingesTop hung which allows a minimum top gap for best appearanceTricycle hangers - hangers cannot fall off track75 pound capacity per door panel1 panel is considered 1 door