System solutions for a comfortable climate and safe smoke extraction
Rapid smoke extraction in the event of fire is crucial for your safety—it protects lives and buildings. With the reliable smoke and heat exhaust ventilation systems (SHEV) from Gretsch-Unitas, you ensure that smoke gases and heat are effectively directed outside. At the same time, we offer you well-designed ventilation systems that provide a healthy indoor climate even in energy-efficient and tightly constructed buildings. Discover our customized solutions for safe fire protection measures and comfortable room ventilation—tailored to your individual requirements.
Electric Drive and Opening Systems
With the innovative drive solutions from Gretsch-Unitas, you can open your windows made of wood, PVC, or metal easily and conveniently—even if they are not within direct reach. Our range of chain, spindle, and rack drives enables individual solutions for comfortable and daily room ventilation—suitable for almost every window application.
Chain Drives
Locking Drives
Spindle Drives
Lever Drives
SHEV Fitting Systems
Accessories
Electric Controls
SHEV control panels ensure the safe and coordinated control of all connected components, including automatic and manual detectors as well as electromechanical drives, and also control ventilation. In the event of fire, they quickly open the smoke vents to extract hazardous combustion gases, making them a key element in preventive fire protection. GU offers you a versatile range of SHEV control panels—from compact units to expandable modular panels—as well as extensive accessories for flexible planning. In addition, we provide ventilation control panels for controlling 24 V DC drives for daily ventilation.
Compact Control Panels
Modular Control Panels
Ventilation Control Panels
VENTUS Toplight Opening Systems
Toplight opening systems offer solutions for both electric and manual operation. The electrically operated toplight opening system, consisting of the VENTUS toplight opener and the ELTRAL electric drive, enables cost-effective electromechanical control of multiple sash units. Thanks to the flat design of the opening scissors, the system is particularly suitable for smoke extraction and daily ventilation of inward-opening, vertically installed, rectangular tilt windows made of wood, PVC, or metal where space is limited. Manually operated toplight opening systems with flat-form toplight opening scissors provide flexible opening options for vertically installed tilt windows in various window shapes. The extensive range of operating options includes hand levers, vertical or angle gearboxes with crank rods, as well as different transmissions, including mullion-transom transmission and flexible transmission.
Electric Operation
Manual Operation
Smoke and Heat Exhaust Ventilation Systems
The development of smoke during fires poses the greatest danger to people and buildings. That is why rapid and safe smoke extraction is of particular importance. Smoke and heat exhaust ventilation systems play a central role as an essential part of preventive fire protection: In the event of fire, they direct combustion gases, hazardous oxides, and thermal energy specifically outside. This keeps escape and rescue routes low in smoke, enabling both active and passive rescue. At the same time, the thermal load on the building structure from hot combustion gases is reduced, preventing damage to the building.
