King size metal bed frame – Unlike most other beds, have a king size bed frame a central support rail or the bed will sag. Although it can be confusing the first time you try to put together a typical king-size metal bed frame, it is easier than it seems. Rail-type bed frames connect using the same general methods. Mark the footprint of your bed frame, using a tape measure where you plan to place the bed. A standard king be measures 76 inches by 80 inches; a California king measures 72 inches by 84 inches. Clear all furniture and other objects out of the bed footprint.
Place the side of the king size metal bed frame position, parallel to the sides of the bed footprint. Set the main and bars in place. For some models, you will place the rails on the floor. Other models require unfolding rails along the hinges that attach them to the side rails.
Place the center support rail in the middle of the king size metal bed frame, which runs parallel to the side rails. Adjust the side and center rails so that the holes in the ends overlap and match up. Different models have different modes for this. For example, some models use a hole, whereas other overlap and further uses two holes.