New Adjustable Bed Rail Center Support System Due to increasing demand for a strong center support system capable of attachment to lower height beds, the Hospitality No Sag Center Mattress Support has been developed. It consists of 3 Steel Cross Rails, each with one adjustable Glide equipped leg. Adjustable The Hospitality No Sag Center Mattress Support is easily adjustable in width and height. It will adjust in Width from 52" up to 77" to fit the following bed sizes: Full, Queen, California King, and King Size. It will adjust in Height from a minimum of 4" up to a maximum of 15". Weight Capacity TheHospitality No Sag Center Mattress Support passed Static Load Testing of 2,000 pounds. The glide on each of the three adjustable legs is 2" in diameter, assuring good weight distribution while protecting floors and carpeting. Some Assembly Required Some assembly is required. Illustrated Assembly Instructions are included as are tools required for assembly.To download a copy of the Assembly Instructions for the Hospitality No Sag Center Mattress Support, click here. Special Note Please review the item description and detailed measurements which are provided to ensure this product will work for your application, as center supports are non-returnable.See our Terms & Conditions page for more information on our return policy.