UK Suppliers Of Siegenia SI121 Spaded Non-Locking Tilt & Turn Window Handle

The Siegenia SI121 Spaded Non-Locking Tilt & Turn Window Handle is a specialised hardware solution designed specifically for high-performance aluminium window systems. Engineered to integrate seamlessly with the LM4200 and LM5200 locking mechanisms, this handle provides a robust and reliable interface for operating tilt and turn functions. Its heavy-duty construction ensures longevity in both residential and high-traffic commercial environments where precision is required. Whether you are replacing a worn component or upgrading a legacy system, the SI121 offers a professional-grade fit and finish. It is important to note that this handle uses a spaded drive rather than a standard square spindle, making it a dedicated part for specific aluminium profiles. The ergonomic design and smooth operation reflect the premium engineering standards associated with Siegenia hardware. Features Compatible with Siegenia LM4200 and LM5200 tilt and turn locking systems Spaded drive mechanism specifically for aluminium window profiles Versatile mounting with multiple screw centre options Available in high-quality white or silver finishes Non-locking design for ease of use in domestic settings Durable aluminium backplate and handle construction FAQs Will this handle fit a standard uPVC window?

No, the SI121 is designed exclusively for aluminium systems. uPVC windows typically use an espagnolette handle with a 7mm square spindle, whereas this model uses a flat spade drive to engage with the internal gearing of the LM4200 and LM5200 systems. How do I measure the screw centres for this handle? This handle features four fixing points to accommodate different gearings. The outer screw centres are 98mm apart, while the inner screw centres are 84mm apart. Always measure the distance between the holes in your window profile before ordering to ensure a match. Is this handle handed for left or right-hand windows? The Siegenia SI121 is non-handed, meaning it can be installed on windows that open to either the left or the right. The internal mechanism allows for the necessary rotation required for both tilt and turn positions in either direction. Can I use this to replace a locking handle? Yes, as long as the spade drive and screw centres match your existing hardware. This is a non-locking version, which is often preferred for internal windows where a key is not required for safety or insurance purposes. What is the difference between the SI121 and a standard spindle handle? A standard handle has a protruding square bar (spindle). The SI121 has a flat metal ‘spade’ that slots into a specific receiver on Siegenia aluminium gearboxes. They are not interchangeable, so it is vital to check the drive type of your current handle. Share on Twitter Share on Facebook Pin this product Share via email