AtlasIED CT31A Heavy-Duty Support CasterThis optional heavy duty support caster reduces the load bearing requirements of the wall by supporting the center section weight when opened and closed (typically used on 61" panel space models). Cabinet must be mounted 6" from the ground. Support is constructed of formed, 14 gauge CRS and includes heavy duty, zinc plated caster with a black, hard tread wheel. The caster adjusts in height from 5 1 2" to 7 1 2" and is supplied with drilling template