Skyjack SJ20 is a self-propelled aerial lift designed for indoor and outdoor access applications. It is a vertical mast lift used for maintenance, installation, inspection, and warehouse work at elevated heights. The SJ20 typically features a compact footprint, electric drive, and zero-emission operation, making it suitable for confined work areas and finished floors. Common specifications include a working height of about 25 feet and a platform capacity suited to one operator with tools. Skyjack aerial lifts are known for simple controls, serviceability, and stable vertical access in commercial and industrial environments.