Specifications:This track only suitable for door thickness 1 3/4" and 1 3/8";Max capacity:150lbs each door; Max Door panel width: 42 1/2" each door, the track can be cut to meet your opening sizes requirement(Note: track length = 2 x door width -1"). Tri-wheel Designed Hangers: Top Mount Hangers with heavy-duty ball-bearing type,the track and three wheel pulleys construction make rolling smooth and quiet, tested beyond 100,000 rolls. Commercial-grade Aluminum: Commercial grade precision extruded aluminum box track ensures door will not jump from track, convex rails on track allow flexible and free rolling. Built-in front cover hides the sliding hardware from view. Easy to Install: Quick release locking tab let you easily install and release a door slab without dropping track. We also provide step-by-step graphic & text installation parsing manual. Widely Application: This track can be used for any space, living room, kitchen, bedroom, bathroom, laundry room, storage room, closet, study, checkroom, etc. Especially for low clearance opening. Quality Service: We are reliable and qualified manufacture of barn door and hardware. For any quality problems or missing parts, or installation problems, please let us know. Professional customer service team are whole day online to help you. JUBEST 7FT Heavy Duty Bypass Door Hardware with Finger Pulls,Sturdy Aluminum Sliding Closet Door Track for 2 door System,Quietly and Smoothly,Fit Door Thickness 1 3/8" or 1 3/4",Easy to Install, Black