Product Overview: This listing is for the box rail barn door hardware only; door panels and handles are not included. The hardware is made of durable steel with a smooth black finish, providing a sleek and modern look. Size and Compatibility: The 16FT exterior double sliding barn door kit consists of four 4FT tracks connected with a connector. It is designed for double doors with a total width of 96" (48" per door). The hardware can support a maximum door weight of 300 lbs, making it suitable for both interior and exterior doors. Installation and Fit: The outdoor sliding barn door kit is compatible with door panels that are 1-1/2" to 2" thick. The rollers have adjustable vertical lock nuts, and the system features a minimal gap between the door and the wall. Please note that the box track must be installed on a wooden board. Included Components:16FT box track double barn door kit including:4FT box track*4;track connector*3;box track bracket*6; roller*4; stop*4; end cap*2; L guides*2;Wall mount guide*2 Additional Features: This heavy duty sliding barn door hardware set is designed for easy installation and provides a reliable solution for mounting barn doors. Heavy duty exterior box rail double sliding barn door hardware