161791 Bi-Pass Closet Track Kit, Closet Door, Max. Weight (Lb.) 60 lb, Galvanized Steel, Mill Finish, Shaft Length 48 in, Length (In.) 48 in, Height (In.) 2 1/8 in, Width (In.) 2 5/8 in, Depth (In.) 3/4 in, Inside Dia. 3/4, Outside Dia. 7/8 in, Max. Wheel Dia. (In.) 7/8 in, Roller Width/Dia. (In.) 7/8, Top Mounting, Number of Wheels 4, Plastic, Hardware Included, Requires Door, For Use With 3/4 in to 1-3/8 in Thick, Wood Door Panels, Each Weighing Up to 60 lb