In a market where comfort, safety, and energy efficiency are becoming increasingly important factors in the selection of hardware, SIEGENIA offers a well-thought-out solution: the TITAN 90° opening limiter. This innovative component from the TITAN line combines controlled window opening with a high level of security and easy operation. “Especially now that windows are becoming taller and heavier, this ingenious opening limiter offers a solution,” says Marten van Dijk, technical coordinator at SIEGENIA.
The TITAN 90° opening limiter is designed to safely limit the opening of windows to an angle of 90 degrees. “This prevents a window from swinging open too far, providing lasting protection not only for the sash and frame but also for the hinge side,” explains Van Dijk. “This is because the opening limiter cushions the sash and gently locks it into the end position. This protects the sash from colliding with the frame or with interior furnishings. This makes this opening limiter particularly suitable for window units subject to heavy use, especially in public buildings such as schools and hotels.”

The opening limiter is fully integrated into SIEGENIA’s proven TITAN hardware system. “For installers, this means that installation is simple,” Van Dijk continues. “The hardware is suitable for both wood and PVC windows and can be installed without additional milling or special machining. In addition, the system can be used for both left- and right-hand opening directions, which significantly increases flexibility on the job site.”
A common challenge in window design is combining ventilation options with burglary protection and user safety. The TITAN 90° opening limiter directly addresses this, Van Dijk explains. “First, this opening limiter can be combined with an RC2- or SKG-certified window, providing additional security in terms of burglary prevention. Second, thanks to the controlled opening angle, effective ventilation is possible without the risk of a window swinging open or shut uncontrollably due to drafts or wind. Especially now that windows are becoming taller and heavier, this ingenious opening limiter offers a solution.”
“And because it prevents windows from swinging open too far, it not only reduces the risk of damage to the window or wall but also enhances safety—for example, in children’s rooms, healthcare facilities, or on upper floors of residential buildings. This also makes this limiter ideally suited for projects with strict safety requirements or where supervision is limited.”
Whether it’s residential construction, commercial construction, or the renovation of existing buildings, the TITAN 90° opening limiter adds value to any situation where safety, ventilation, and ease of use come together. “Architects appreciate the subtle design and its integration into existing hardware lines, while installers benefit from quick installation and end users from intuitive operation,” said the technical coordinator.
According to him, with the TITAN 90° opening limiter, SIEGENIA is therefore addressing a clear need in the market: a smart, reliable, and aesthetically pleasing solution for safe window ventilation. “The hardware fits seamlessly into the TITAN portfolio and offers both installers and end users a sustainable solution for a safer living and working environment. At a time when health, safety, and sustainability are becoming increasingly important, SIEGENIA is once again proving its role as an innovative partner in modern window and door hardware.”