Feature--- The matte black steel bottom track ensures a high level of performance for your sliding door. Two screw holes provide a secure lock that prevents the door from turning to the sides. Material--- The ground guide adopts premium carbon steel, a sturdy, tough, and durable material. To ensure the quality of the material, all parts are salt spray tested. Easy to Install--- Attach it to the wall with screws and no grooves are required for the door. By adjusting the track rollers to fit your door panel. No need to drill holes in the ground. Proper Use--- This adjustable width floor guide is suitable for pre- and slotted doors. When the door is 1 to 1-3/8 inches thick, the bottom groove will be ...