Description : The floor guide adopts premium carbon steel , heavy duty , tough and durable . This floor guide ensures a high level performance for your sliding barn door and prevents door from swinging to sides . Suitable for sliding barn door thickness from 1 to 1 - 3 / 8 inch . This guide mounts to the wall behind the door and out of sight , which will give your sliding door a clean look . Wall mount apply for all scene , adjust the position to fit your door panel . Easy to install , it won &# 39 ; t ruin your floor . Specification : Material : Carbon Steel Color : Black The total height is about 4 . 8cm / 1 . 9in , the minimum interspace is 2 . 5cm / 1 & quot ;, and the maximum interspace is about 3 . 5cm / 1 . 38 & quot ;. Package Includes : 1 Piece Floor Guide 1 Set of Screw (2 Pack) Note : 1 . Please allow a slight color difference between the real item and the pictures due to the difference between monitors . 2 . Please allow a slight measurement error . Hope for your kind understanding and have a nice shopping day !