Main Material:Carbon Steel. Maximum Door Weight Capacity: 100kg. Suitable for Wood Door Thickness:1.37″-1.57″(35-40mm). Right Choice to Your Door: This barn door hardware kit fits 3-5cm thickness door; Door weight capacity: 100kg. With integrated spring door stops reducing the vibration for quiet closing. Easy to Install: Step by step installation manual with the detailed pictures and concise text makes the installation easier; Time & space saving hardware kit. Notice: Only the hardware is for sale. Just one track to hang double doors, two doors can overlap. About Track: Track width is 4cm, thickness is 6mm; If door thickness is 4cm, the distance from the door to wall about 1cm. About Roller: Carbon steel material with GCR15 bearing, smoother when sliding. Door Stop: 2 PCS. Accoding to rail holes. 1 hole need 1 set. How to choose track size. Track size= 2 × Single Door panel Width. (Like your door width is 3FT, you will need 6FT length Kit).

4-20FT Sliding Barn Door Hardware Kit Single Double Doors (NO DOOR). Material: Track– Carbon Steel, Black Roller–High quality steel wheel material–Premium nylon Door Max Weight Capacity: Up to 330lbs every pair rollers Fits sliding Door Thickness: From 1 3/16″ to 2″ The top of the Doors to the ceiling : Min distance is 6. Package Includes: SINGLE DOOR. Spliced rail with pre-drilled holes. Wall hangers+ Track Screws + Wood plugs (according the track holes quantities). Install instruction: x1 DOUBLE DOOR. Only sliding door hardware kit. Don’t include the Door. How to Choose Track Size. Track’s length should be twice of door panel’s width (like your door width is 2FT, You will need 4FT hardware Kit). Single door= 2 X single door panel width (Like your door width is 3FT, you will need 6FT length kit) Double door= 4 X single door panel width (Like your door width is 3FT, you will need 12FT length kit).