glideaway drcv1l bed rail system - adjustable steel drop rail kit to convert full size beds to fit queen size mattresses - suitable for antique beds - hook-in attachments glideaway if you have a full size headboard and footboard that includes slots for a hook in frame and you would like to increase your mattress size to a queen we have the perfect frame to make this happen. glideaway's drcv1l full-queen drop rail bed frame converter does all of this and also lowers the mattress height 3 1/2 inches. no need to buy a larger bed and bedroom furniture to match. for just over a hundred dollars you are in business not to mention the huge increase in your sleeping surface. (photo of full size headboard and footboard not included and are shown for illustration purposes of center support connects).by simply purchasing glideaway's drcv1l full-queen conversion frame you not only make your full size bed into a queen but you are able to lower the mattress by 3 1/2 inches. while many queen headboards and footboards sold today already offer the versatility of fitting to both queen and full size bed frames and mattresses, older styles didn't offer this luxury. now old full beds can adatpt to new modern queen size mattresses.when the hook in side rails are attached, they are 82 inches in length. once the side rails are installed the system provides an extra inch at each end of an 80 inch long queen size mattress. buyers love that it is still easy to make and pillows won't slide between the mattress and headboard.heavy duty hook-in angle iron rail system converts full size headboard & footboard to accommodate queen size mattress & boxspring. the center leg has an adjustable foot that eliminates boxspring sag, which is attached to the steel center cross support. the center support helps distribute the weight of the bedding; proper weight distribution prevents bed legs from cracking and splitting. note: when moving the bed do not slide or you may damage supporting legs.