Prevents mattress from sliding off the bed frame: The adjustable mattress support bar effectively holds the mattress in place on the bed frame and prevents the mattress topper from sliding. The non-slip mattress grip ensures a safe and comfortable sleeping environment for your family. Improved design: The non-slip mattress protectors for bed frames are designed with two round steel plates, each with four screw holes, which ensure a snug fit with the bed frame and optimal slip resistance. In addition, our mattress stabilizer rail is higher and wider, which better secures the mattress to the bed frame and prevents the mattress from sliding. High-quality material: The mattress topper is made of high-quality solid metal. The surface of the mattress joint is treated with an antioxidant, making it sturdy and durable and will not rust. Easy installation: There are two ways to install metal mattress stabilizers: 1. Stick the double-sided tape on the round steel piece of the holder, and then stick the other side to the bed frame. Advantages: No holes are required and the bed frame will not be damaged. 2. Secure the mounting hardware to the bed frame with screws. Advantage: Superior anti-slip effect, safer. Wide applicability: Non-slip mattress supports suitable for most bed frames, such as leather beds, upholstered beds, adjustable bed frames, king/queen/platform beds, RV mattresses, metal/wood bed frames, etc.