Stair Systems LLC. Is a Cleveland area-based company founded in 1992. We have been serving the construction industry for over 30 years throughout the Eastern half of the U.S. with a wide array of structural and miscellaneous steel building products including stairs, rails, ladders, beams, columns and mezzanine systems. We are also a bar joist and deck supplier, as well as an erecting service. We are devoted to bringing you what you need, when you need it!