Sioux Falls Fire Station Window Installation 9th St and Minn. Ave Customer's Problem: The building had leaking and rotting windows, which required too much maintenance. Being an historic building, there was a need to keep the same appearance. Service: Alpha Building Services removed all windows in the roughly 70' hose tower and both large southern window configurations in the main truck parking bay. By installing Thermal Line composite windows, two customer problems were solved. There is no maintenance of the new windows, so the firemen can attend to more important aspects of their work. Also, the historical appearance of the building was kept in place, since the custom-made grids in the Thermal Line windows matched the original installation. © 2003-2010 Alpha Building Products. All Rights Reserved.