If your border tile size ends up being exactly 24 inches or you’d like to start with a full size tile and you’re using full-sized tegular (revealed edge) ceiling panels around the perimeter of the room, you will need to order 25″ cross tees for your border (only). The 25″ tees can be purchased directly from us. Using 24” full-sized border tiles is a rare occurrence, as we recommend a balanced border; not unnecessarily starting with a full tile to the wall. See below for details. If you plan to use a revealed-edge panel, you will need to install the wall bracket with the long leg towards the ceiling and the short leg facing the floor. The standard 23-inch cross tees are going to be too short for your first row of tile against the wall. One option is to purchase 25-inch cross tees from us. The 25-inch tees are only needed against the wall where a full panel is being used. Next, measure 24-inch from the wall towards the center of the room and snap a chalk line. This line is where your first top hanger will be installed. After you have the first row of top hangers and cross tees installed, you can begin using the standard size cross tees for the remainder of the room. If ordering a 25-inch cross tee is not an option, the revealed-edge panels can be altered. A revealed-edge panel has a 1/4-inch lip around the edge. The lip on the panel that will be resting on the wall bracket can be cut deeper into the tile. This will allow you to push the tile further into the wall bracket, moving the top hanger closer to the wall bracket, and allowing the standard cross tee to rest on the wall bracket and sit in the notch on the top hanger. If you choose to use a flat panel, you will want to install the wall bracket so that the short leg is towards the ceiling and the longer leg is facing the floor. Next, measure 24 inches from the wall out towards center of the room and snap a chalk line. The top hanger will be installed on this chalk line. Inverting the wall bracket in this situation will allow you to use a standard cross tee from the wall bracket to the first top hanger. Order 25-inch cross tees online here. To order over the phone, please give us a call at 1-800-434-3750.