Steen Overgaard Sørensen

Part of WindowMaster International A/S, WindowMaster Control Systems Ltd. is a British company founded in 1999 that helps the construction industry meet their sustainability goals through natural ventilation and facade automation. The company is based in Kettering, UK. The company has Installer & Service partners all over the world to help implement and maintain their solutions. The company also offers an Environmental Product Declaration (EPD) to transparently document the environmental performance or impact of their building products over their lifetime. The company also offers a Building Simulation (BSim) program developed and maintained by the Danish Building Research Institute (SBi) to help with natural ventilation.

Part of WindowMaster International A/S, WindowMaster Industries GmbH is a German company that specializes in providing chain, angle, espagnolette, spindle, and z-brackets made specifically for WindowMaster actuators. The company is based in Herford, Germany. The company's products are used for power supply and control of window actuators for natural, mixed mode, and smoke ventilation. The natural ventilation motor controllers are available with ±24v and/or motorlink®. The CEOs of the company are Markus Weidmann, Steen Overgaard Sørensen.

WindowMaster AG supplies indoor climate solutions through natural ventilation for all types of buildings. Its products include smoke ventilation, national and hybrid ventilation, window actuators, cables, spare parts, and discontinued products. The company is headquartered in Trimbach, Switzerland.

ROCKWOOL A/S manufactures and offers products and systems based on stone wool. It sells all types of building insulations such as floor, wall, roof, plumbing, facade as well as fire protection products. The company was founded on August 15, 1941 and is headquartered in Hedehusene, Denmark.