Prevent Falls: The 30" Safety Bed Rail acts as a guard rail helping to keep you or your loved one safe from rolling out of bed during the night; use the bed rail as a grab bar for balance and support when transferring in and out of bed | Folds Out of the Way: Fold the support rail down and out of the way when not in use or while making your bed; simply release the 2 round knobs from their locked position to collapse the rail | Compatibility: For use with most traditional and platform beds including Twin, Full, Queen, King, and California King, and with mattresses between 10 to 19 inches thick; not intended for use on adjustable beds or beds with extra soft mattresses | Low Profile Design: The compact design of the bed rail offers stability and assistance while providing a low profile, unobtrusive solution to bedroom safety; the bed rail supports up to 300 pounds | High Quality and Easy to Assemble: Easily assemble and securely install the rail by sliding the base tubes in between your mattress and box spring; each bed rail includes all the needed equipment for assembly, no additional tools required