BIG WHEEL HARDWARE KIT. SINGLE DOOR HARDWARE KIT. DOUBLE DOOR HARDWARE KIT. BYPASS DOUBLE DOOR KIT. 4 Doors Bypass Sliding Interior Barn Door Hardware. Bypass Sliding Interior Barn Door Hardware. Main Material & Surface? Black frosted(Multiple electrostatic powder spraying process), high quality carbon steel (High Standard Q235), corrosion protection, antirust, environmental protection, non-pollution. Track’s hole: standard 16 inches. Track and roller arm thickness: 1/4 inches, very sturdy. Track and door bolts is 8.8 grade high strengh bearing capacity. Stopper: rubber covered, good buffer effect, reduce the noise. The wheel surface is covered with nylon, slide very quietly. Roller Bearing is high purity bearing steel Gcr15, passed the test of opening – closing for 100000 times, wear-resisting, ensure the stability of the move and the wheel’s fluency. Wheel shaft is made of reinforced steel and electrophoretic process, These are different from other products. We are professional factory, product has been tested and verified several times, accept custom-made barn door hardware. Our instruction are illustrated in inches, easy to install. Any problem in using it, our professional staff in the barn door hardware field will answer questions for you. Our instructions step by step with fractional measurements in inch, have detailed word instructions with pictures. Mark and drill track an d bracket holes. Pre-drilled 16 apart holes on track. Keeping the tracks level is VERY IMPORTANT. Install the inside track use spacers and bolts. High strengh bearing capacity, fit for concrete wall and wooden wall. If your door is thicker than 1-3/4 or have doorway trim, we have. 2” spacer can free for you. 12 X 1-3/8” spacers. Attach brackets to the wall and install the outside track. The bracket consists of two parts, split design is more stable and load-bearing capacity is higher. One track hang two doors, the door can slide on track where you want. Install Door Stoppers with wrench on 2 tracks. Can prevent the door falling off from the track, one door have 2 stoppers. Ensure the stability and safety. Good damping effect, reduce the noise. To fix stopper on track, it is very fastening. You can put it on track. To stop your door, easy to remove if you want adjust. Attach steel hangers to your doors Door weight capacity is 200lb, fit for door thickness is 1-3/8″ 1-3/4″ We have different bolts for your different thickness door if you need, please tell us, we will free for you. Hang your door and install Anti-jump Pad on top of door Anti-jump Pad can prevent door to be lifted off rail, ensure the stability and safety One door install 2 anti-jump pads on top of door 8 X anti-jump pads. Adjusting your door the opening and closing positions then install floor guide Floor guide can prevent the door swinging out or up against the baseboard, let your door slide on same locus Our floor guide have 2 installation methods If you don’t want to install on floor or slot in your door, we have different kinds of guides can help your project, please tell us 4 sets X floor guides. How to choose size? Track’s length should be at least of total door width or the openning (you can use the track which is a little bit longer). For example, if you have fours doors that are each 27” wide, you will need 427” = 108” long track. Or if your opening is 108” wide, you will need at least 108” long track The gap between inner door&wall is about 5/8”, the gap between two door panels is about 2” (based on door thickness: 1-9/16”) Ceiling space from top of the door to ceiling only need 9′. About Our Product High purity bearing steel Gcr15 (Special material for bearing), ensure smooth sliding and stand wear and tear The material is heavy duty high carbon steel, thickness is 1/4” We have large processing factory and advanced equipment, excellent professional design, production and workmanship Only the hardware is for sale, door is not include Double track bypass barn door hardware can help you save space, easy complements your kitchen, wardrobe, bathroom, bedroom, storeroom. Our Store accept many of pay. You should receive item within 3-7 days. But we will try ou. R best to ensure the items reach soon. We accept items return within 30 days from the date you receive the package.