Bed frame strips, also known as SLATS, are thin strips of wood or metal that are used to support a mattress in a bed frame. They are typically placed horizontally across the frame and are held in place by brackets or clips. SLATS provide a more even surface for the mattress to rest on, and they also help to distribute the weight of the mattress more evenly. SLATS can also help to reduce noise from the bed frame when it is moved.