This HOMCOM sliding door track kit allows you to hang a folding door in a smooth sliding action. It is a great way to gain extra space where the door would normally open. Very suitable for hallway dining room and bedrooms. The kit gives you all you need to transform. This includes a 4ft track J shape rollers rotating shaft door hinges and all other hardware shown in the pictures. Your space updated effortlessly. Key features include quiet operation. This sliding door track kit wont make much noise so it wont disturb others when open or close. Steel pieces are powder coated for extra strength making this sliding barn door track kit tough. It helps save space by allowing the door to fold in half creating easy access and maximising space. The package includes the sliding door track kit a 4ft track J shape rollers rotating shaft door hinges and all other hardware shown in the pictures. Door not included. Simple assembly with predrilled holes in the bifold door track. It is suitable for wooden walls self tapping screw or cement walls expansion screw. It is suitable for door panel thickness from 40 to 55mm. Dimensions are H 4.0 x W 0.5 x D 122.0 cm. Weight is 6.2 kg. Color is Black. Material is Carbon Steel. Model Number is B81038V00BK.