Embeded bottom, more stable, sliding smoothly. We will try our best to solve the problem for you. Fit Door Panel Thickness 1-2. 1x Wall-mounted Adjustable Floor Guide for Sliding Barn Door 2-pack of wall-mounted guides with adjustable rollers for quiet, stable sliding on carpet or tile floors, including 8 setup options. This sliding barn door floor guide is a handy piece of hardware that keeps barn-style doors gliding smoothly without swinging Fit door thickness: 1-2. STURDY&STABLE No need to drill holes in your floor. Both side have PREMIUM NYLON rollers, protect the door from scratching and make every slide smooth and quite. ADJUSTABLE Adjust simply using the attached L-shaped wrench. Upgraded one, no need to drill holes in your floor. You can fix it to the wall with two screws, you don't need to punch holes in the floor, and you don't need to slot your door. 2.Adjustable. Adjustable nylon... 【Material】: Carbon Steel Body, heavy duty. Sliding Door Floor Guide Extra Small Black Barn Door Bottom Floor Guide Adjustable Roller Hardware Flush To Floor Barn Door Floor Guide