Our Colorado Adjustable Double Rail Sliding Panel in snow white color are made out of natural fiber paper and polyster. Provide flexibility to your home. Perfect for patio door or as a room divider. All hardware included. Sizes : Alumunium Track. Extendable 44 to 78 inches. 4 Panels each 19.75 W x 88.5 L inches. Also Customer can cut Panels to desired length and than install bottom Alumunium rail.