The Zen MTS50 Thermally Broken Steel Window system is our premium solution for projects where thermal efficiency, structural integrity, and the timeless appeal of steel are equally important. Suitable for a range of fixed, awning, casement, bifold and custom window applications, MTS50 has been developed for high-end residential and commercial projects that demand elevated performance without compromising architectural expression.
Manufactured from solid steel and incorporating a true thermal break, the MTS50 profile is engineered to significantly reduce heat transfer and improve the overall performance of the building envelope. This makes it our best thermal steel window profile, ideal for homes and commercial buildings where energy efficiency, internal comfort, and compliance are critical considerations.
Despite its strong construction, MTS50 maintains a refined and disciplined steel appearance, allowing large areas of glazing to feel elegant, resolved, and architecturally substantial. It is particularly suited to expansive window openings, full-height glazing, and projects where steel windows are used throughout to create continuity and performance across the façade.
The MTS50 system is designed for those who want the enduring character of steel with the benefits of advanced thermal technology. Strong, robust, and performance-driven, it offers a sophisticated solution for architects, designers, and homeowners seeking thermally broken steel windows of the highest standard.
