Filters Clear All Recent HVAC maintenance platform installation in Little Rock, AR Access stair installation to a Marvair Electrical House (E-House) at an industrial facility. This industrial stair and access platform were installed for Utility Technologies International Corporation Custom OSHA crossover step for rooftop ladder access Crossover Stairs created for access to Rooftop Generators. The Upside APEX Stair system was used for A/C maintenance at this modular complex at the Department of Veterans Affairs. This image represents the installation of stairs and a catwalk platform for the use of the Department Of Veteran Affairs.