Skyjack SJIII 4740 is a self-propelled electric scissor lift in the aerial lifts category, designed for indoor and outdoor access work on level surfaces. It provides a working height of about 46 ft and a platform height of about 40 ft, with a narrow chassis for maneuvering through standard doorways and tight jobsite areas. The SJIII 4740 typically features a steel platform, extendable deck, proportional controls, and non-marking tires for facility and maintenance applications. Common uses include construction, installation, inspection, and warehouse work. It is part of Skyjack's SJIII series of vertical mast and scissor lift equipment.