SIZE DETAILSOur guide rails are suitable for both grooved and non-grooved sliding doors, the dimensions of each are approximately 4.5x2x1.9cm/1.77x0.79x0.75inch, please check whether the product size matches the sliding door before purchasing. EASY TO USEThe screw accessories required for installation are included in the package. You only need to adjust the gap between the floor guide and the door, determine the installation position, and fix the floor guide to the floor with screws. PACKAGE CONTENTYou will receive 4 pairs of barn door floor rails, 16pcs x screws and 16pcs x expansion tubes. The quantity is enough for your different uses. They provide you with a quiet, easy glide. POM MATERIALThe floor guide is made of POM, which has good impact resistance, is not easy to be damaged, and is resistant to high temperatures and impact. They prevent the door from swinging during movement and maintain balance and stability. WIDE APPLICATIONDoor floor guides are available for single or double doors, as well as bypass, pocket, wardrobe and barn doors, and their use prevents doors from swinging sideways.