The AT open-back assembly table, designed to help woodworkers build frames, features a clamping arm that rides on an open beam; the configuration is designed to allow face frames to extend beyond the top of the table. The extruded aluminum arm glides on sets of sealed ball bearings. The bottom rail is set at 32 in., and a shallow tabletop angle helps reduce operator stress. Further, the table can be converted to use two arms or run an additional cylinder per arm. (800) 282-8338, CastleUSA.com.