8FT Box Rail Hardware Heavy Duty Steel Sliding Barn Door Track, Ceiling Mount Kit, Fit Indoor and Exterior Door, Smoothly and Quietly Easy to Install. HEAVY DUTY CONSTRUCTIONBarn box rails made of solid steel, fine black powder coated surface, anti-corrosion ensures years of beauty and longevity. 8.8 grade screws and roller screws ensure our hardware kit can hold 300lbs doors. Over 15000 times test, bearing rollers slide like butter, slide quiet and smoothly. DOOR WEIGHT CAPACITYHold MAX door weight 300lbs, can be used for both interior door and outside door. Suitable for door panel thickness 1 1/2″ to 2″; The rollers vertical lock nuts are adjustable. Fit exterior door and indoor project. SMOOTH BALL BEARINGS SLIDESAll Rollers Equip with 2 Ball Bearings -Bearings provides a very quite and smooth glide as the door opens and closes, smooth every slides. KIND REMINDSLeave enough space between wall and box track if you have door frame/baseboard. Only box rail barn door hardware for sale, door panel and handle are NOT included. EXPERTLY PACKAGED8FT kit including: 4FT box trackx2; Box track bracketx2; Connectorx1; Rollerx2; Stopx2; End capx2; L guides. Item Dimensions LxWxH: 1.5 x 96 x 84 inches. Item Weight: 22 Pounds. Mounting Type:? Ceiling Mount. Item Weight:? 22 pounds. Product Dimensions:? 1.5 x 96 x 84 inches. Item Package Quantity:? 1. Date First Available: May 11, 2022. Except on weekend or public holidays. We stand behind our products. Your receive the wrong item.