Abstract: An extendable rail system is comprised of a support beam, a slide beam and a storage beam. The slide beam and storage beam extend horizontally and are supported by load rollers at one end and by a grooved roller at the other end. The grooved roller of the slide beam mates with an extension of the support beam. The grooved roller of the storage beam mates with an extension on the slide beam. The slide beam includes first and second lateral flanges. Roller members attached to the support beam and to the storage beam, roll along the inner tracks of the flanges to hold the slide beam adjacent the support beam and the storage beam adjacent the slide beam. A brake is provided comprising a rod extending the length of the storage beam and first and second member connected to the storage beam. Both members have an opening for slidable movement of the members along the tube.