[SOLID STEEL BUILD, UPGRADED ROUNDED CORNERS] - This sleek black powder-coated barn door floor guide is tough, durable, and rustproof. It sits flush with the floor, requiring no groove in the door or drilling into the floor. Perfectly shaped with rounded corners, countersunk holes, and screws, this guide keeps children and toes safe from injury. [EASY TO INSTALL FOR MANY USES] - This heavy-duty roller door guide easily mounts to the wall with screws. The low-profile sliding door rollers look great indoors or outdoors for areas like living rooms or DIY projects on concrete slabs. It works perfectly to keep the door aligned against the wall and comes with step-by-step instructions for easy assembly. [SMOOTH & QUIET, GLIDES LIKE BUTTER] - Our adjustable bottom roller wheels feature built-in ball bearings for smooth and effortless rolling. Unlike others with large wheels and only two small bearings, this guide keeps the door balanced and stable from both sides. It requires minimal installation space and offers ample wiggle room for perfect roller alignment with the door. [ADJUSTABLE ROLLER POSITION] - Fully adjustable for barn doors of varying thicknesses. Suitable door thickness can be up to 2-13/16 inches when using 2 rollers, or up to 3-5/8 inches with the inner roller removed. Adjust the roller position in the track to fit your door panel, making it suitable for most closet pocket doors.