Glyceryl ether compounds prepared by the reaction of glycerol and olefin epoxides are disclosed. The rack mount is preferably of knock down construction, but certain portions of the rack mount may alternatively be of unitary construction, and may be assembled quickly and easily. The intermediate support possesses an upper part which can be used as a prop, in combination with a jack arranged along the vertical pivot axis of the beam. The wireless access point forwards the predictive roaming information associated with a wireless client to neighboring wireless access points while the wireless client is still connected with the wireless access point.