Start by placing the components of the frame on a flat surface. Fold the 2 side pieces, the top and bottom, and insert a screw in each of the 4 corners. Then measure diagonally through the door from corner to corner in each direction to level the door. If you have 2 roulettes to use at the same time (preferably), it should look like X through the door. Make sure that each measurement is identical. If not, make the necessary adjustments. Once your door is square, insert 2 screws in each corner.
Now you are ready for the horizontal braces
You can use your own 2 x 4 wood, or for a stronger barn doors will county il you can use metal shirts that can be ordered with your kit. Measure down on both sides of the door frame, starting at the top, and mark every 2 feet with a pencil. Insert the ends of each bracket into the side guides of your marks. At this point, you can measure the angles of the doors again to make sure they are still square. Then insert the 2 screws through the door frame and into the bracket at each location. Drill 2 holes down through the upper frame guide, 12 “from each end of the guide, secure the trolleys to each hole, be sure to order trolleys with a balanced bolt suspension system that allows you to raise them and download them from side to side, you’ll be glad you did it later, screw the cars on top of the door.
At this stage, you can place a door cover of your choice;
Or wood or metal. Screw the door cover to the door frame and the horizontal struts. You can also place the lid after hanging the door. This way, you will have a lighter door during the suspension procedure. If you have not installed a door yet, now is the time to do it. Use a level to make sure the track is suspended evenly. Be sure to measure the height of your door plus the height of the car to determine how high your installation is. Once the track is installed, insert the wheels of both cars at the end of the track. Put plugs on the ends of the track. If you purchased an adjustable hanging trolley, you will have the opportunity to fine-tune the position of the door. After adjusting the door as necessary, tighten the nut on the carriage bolt and install a small screw to prevent the nut from falling off.