Function - This floor guide ensures optimal performance for your sliding barn and swing door. Scope of Application - Suitable for sliding door thicknesses from 1 to 1-3/8 inches. Please refer to the measurement in the picture before purchasing. Easy to Install - Mounting screws included, no drill required. It is easy for you to install the floor guide, it will not ruin your floor. Wall Mount Floor Guide - This guide mounts to the wall behind the door and out of sight, which will give your sliding door a clean look. Premium Material - The floor guide adopts premium carbon steel, which is sturdy, solid and durable. Description: This floor guide is designed for sliding barn door to prevent the barn from swinging sideways. It mounts to the wall behind the door and requires no drilling into floors. Specifications: Condition: 100% Brand New. Material: Carbon Steel Color: Black > Size (L x H x W): Approx. 4.5 x 2.7 x 4.8 cm / 1.77 x 1.06 x 1.89 inch Weight: Approx. 118g