Track and Hardware Kit, Folding Door, Max. Weight (Lb.) 100 lb, Aluminum Finish, Length (In.) 48 in, Height (In.) 1 1/8 in, Width (In.) 1 5/16 in, Roller Width/Dia. (In.) No Roller, Needle Bearings, Number of Wheels 4, Requires Door, For Use With Folding Doors Up To 100 Pounds