Item Type: Door Floor Guide_x000D_ Material: Carbon Steel_x000D_ Color: Black_x000D_ Weight: Approx. 422g / 14.9oz_x000D_ Product Size: Approx. 12x5x6cm / 4.7x2.0x2.4in 1ADJUSTABLE DESIGN The bottom is equipped with fully adjustable rollers to ensure safe sliding, good stability and not easy to shake. 2EASY INSTALLATION With screw fittings, fix 2 screws on the floor bottom plate, adjust and tighten them to stabilize your barn door. 3CARBON STEEL MATERIAL Selected high hardness carbon steel material, sturdy and durable, wear resistant and corrosion resistant. 4SMOOTH BEARING Use one piece bearing to provide super smooth sliding. With a groove at the bottom of guide rail to protect floor from scratches. 5HIGHLY COMPATIBLE It can be used with 3 inch thick doors. It has good compatibility and is suitable for all brands of barn doors. 1 x Floor Guide 1 x Screw Accessory Kit (2 x Screw, 2 x Screw Tube, 2 x Fixed Width Screw, 1 x Long Screw, 3 x Sticker, 1 x Wrench) 1 x Manual 1. Please allow 0?1 inch error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.