Aluminum Ships Ladders for access to roof hatches, mezzanines, etc. Crossover Ladders for access over equipment or machinery.Disappearing Stairways for Commercial and Residential Applications. 2 Hour Fire Rated Stairways or non-fire-rated models. Comply with ANSI A14.9 Fixed Aluminum Ladders for interior or exterior use. Ladders with safety cages or without Roof Hatches, also known as Roof Scuttles. Available in Galvanized Steel or Aluminum.                Automatic Electric Disappearing Stairways, Retractable Ladders, Pivotal Ladders, Safety Rails for protecting floor openings, etc.