Our medium capacity wall mounted boom jibs utilize rugged steel ZRS2 rail, formed from 9 gauge steel, for an easy to move boom up to 20 ft (6 m) long with 220 degree rotation. The boom features a running surface with less then 1% rolling resistance and powder coated for a smooth, clean, corrosive-free surface. The jib comes standard with a mounting plate assembly for mounting the jib to walls, existing building columns or any suitable surface. Any structure to which the Jib is mounted should be certified for this purpose by a registered structural engineer. See attached specifications.