FINE LINE super strong but lightweight 6 leg frame with center support and 6 Glides. Adjustable. Fits Full, Queen and King with&tilde;center Support. Fits Twin without center bar. Certified Green Product, Made in USA. Limited Lifetime warranty Adjustable. Fits Full, Queen and King withcenter bar from head to toe. Can also be used as side to side center support in Queen when not using a split box spring.Fits Twin but without center bar. SUPER STRONG YET LIGHTWEIGHT! Made from Recycled rail road track, high carbon steel with high tensile and yield strength which makes it superior to frames made of any other steel. Even steels that are larger in size and heavier in weight. Glides are safer, stonger and friendlier than wheels on all floors and crucial on wood or hard surface floors. Easy Assembly, no tools required. Headboard Bracket will fit virtually all Beds. End protection caps provided. Made in USA including all components . Limited Lifetime warranty. CERTIFIED GREEN PRODUCT. Documented by Penn State University, the production of this steel actually leaves a negative carbon foot print on the environment. Only EPA approved coatings are used on this frame.