Our Vancleef products have been redesigned with consumers in mind. We have changed the product to have less pieces so installation is now more simple and quick. All tracks below 10'' are now using the American Standard spacing (16") and are one single track now instead of being composed of smaller tracks. All tracks now have additional holes at the end of both sides for expanding the track size. For tracks 10'' and above, connecting tracks are now simple and quick, using a junction plate at the ends of the tracks to connect.Guaranteed Service - Our product will come with a 5 year warranty. Our premium barn door hardware has passed 120,000 times opening and closing tests. Our products ship from the USA using UPS/FedEx. The lead time will be 1-2 business days and the product will ship within 2 - 5 business days. If you need a customized order then you can contact us through Houzz.Product Features::PREMIUM MATERIAL - Our barn door hardware is made using premium carbon steel. So you can be assured that our products are safe and reliable. High quality frosted black steel makes it heavier than other sliding barn door hardware but more strong and durable. OPTIMIZED SPACING - Tracks are now using the American Standard spacing (16"). No more confusing metric system, everything is ready for you to tackle your project! Tracks 10'' and above needs to be connected so the spacing in the middle will not be 16". SOLID STRUCTURE - Each complete sliding track can hold door weight of 200 lbs. Passed 120,000 times opening and closing test. They are also fire proof, water proof and rust proof. We have made the rollers with high quality nylon. The rollers will not make any noise when it glides on the track. EASY TO INSTALL - Detailed installation manual included. This hardware is simple to install and requires at max 2 people. All tracks now have holes at both ends of the track for simpler and hassle free connection to other tracks with a junction plate.IMPROVED PACKAGING - Double layer package ensures that you will not miss any accessories. The double layered package will protect your materials from scratches or damage as well. Rest assured that your materials will be safe!Pre-install Notice:1.Only the hardware is for sale, DOOR IS NOT INCLUDED. 2.This door hardware is compatible with door panel width of approximately 45" and thickness of 1 3/8" to 1 3/4".3.You need to have at least 6" of space between the top of the door to the ceiling to accommodate for the hardware.4.The maximum capacity is 200 pounds for each rail.5.Tracks 10'' and above have to be connected with smaller tracks. Therefore the spacing in the middle will not be 16". Package Includes:4x Steel Hanger/Roller 2x 7.5FT Flat Track 12x Adjustable Spacer 2x Floor Guide 12x Expansion Bolt 12x Lag Bolt 12x Washer 4x Door Stopper 4x Anti-Jump Pad 1x Hex Wrench 1x Junction Plate1x Installation Manual