Stelzer Alutechnik

Founded in 1999 in Neufra with three employees, Stelzer Alutechnik began making aluminium entrance doors and windows. Three years later it developed the HA-COMBI WIN wood-aluminium window system and the WF-VARIO 3 post-and-beam facade system, becoming a system house that supplies profiles and accessories to window and facade builders nationwide. In 2008 the company moved to its own production facility in Gammertingen, where it now employs over ten people and produces about 1500 entrance doors per year. A second production and storage hall of 800 m² was added in 2013. The company also manufactures lift-slide doors, folding sliding doors, frameless sliding elements, and special roof windows for conservatories. Its HA-Multiframe Integral 2020 system features extremely narrow frame profiles and can achieve passive-house U-values down to 0.69 W/m²K.