8 in 1 option and easy to install- It is 8 different mounting methods which can be easily installed. Simply fix two screws in the bottom bar, then pull the roller guides in place. Durable and high quality- Our sliding door track is made of high quality carbon steel, the coating black resists wear and corrosion and provides longer service life. Easy to Slide- The smooth roller can slide easily, then slide the door open without difficulty. The bottom of the floor guide is flat and does not damage the door and the floor. Adjustable Sliding Door Floor Guide Track Floor Guide Guide Sliding Door Guide Door Assembly - Sliding Door Kit - Ideal for all sliding doors. 8 in 1 Floor Guide Sliding Barn Door Guide Adjustable, Black Wall Mounted Door Bottom Floor Guide Multifunctional Barn Door Bottom Floor Guide Adjustable Roller Floor Guide for Sliding Doors Feature: - Easy to install, just 5-10 minutes and you have beautifully crafted hardware that we offer. - Doors move smoothly back and forth without noise. < p>- Opening at the bottom of the channel saves your wall and extends the life of your existing barn door hardware by reducing and colliding doors and wall. - Adjustable and suitable for door leaves from 30mm to 84mm. How to install: < p> 1. Measure the thickness of the door. 2. The roller in the floor guide to make sure there is enough space for the door, just slide the film inside, then tighten the screw at the bottom of the floor guide. 3. Mount it on the wall with screws. Specification: Material: Steel carbon Dimensions: 11.1 x 6.2 x 4.9cm Mounting methods: 8 in 1 option as the picture Fits to doors with a thickness of 30 to 84 mm Colors: black Package includes: 1 x floor guide 2 x screws 1 x hex wrench 2 x ribbed plastic anchors 2 x threaded rod