Comprehensive system for high-rise buildings with full glass façades and fast & easy installation

MU4200 Structural and MU4200 Step Structural are comprehensive curtain wall systems offering simple, safe and sound solutions to the most demanding design concepts of modern architecture. Ideal for low or high rise buildings, MU4200 Structural and Step Structural are engineered for fast and easy installation, with windows blending seamlessly with glass units creating beautiful building façades.

Only glass is visible on the external building façade as panes are fixed onto the façade frame using specialised silicone.  

The system is also available with or without thermal insulation and the choice of concealed hinges and top hung projected openings at any part of the entire screen.

MU4200 S
Engineered for extreme weather conditions with excellent performance ratings
  • The systems are thermally insulated and “severe weather rated” by full size dynamic tests conducted according to CWCT UK test sequence and meet the strictest European and international standards achieving global commercial success particularly in countries such as England, Ireland and Germany.
  • The systems are closed at 3 points with an EPDM watertight seal, achieving perfect air and water tightness, preventing the transfer of temperatures from the outside in and vice versa.
Combines fast and easy installation with design flexibility
  • The systems are engineered for fast and easy installation particularly on high-rise buildings. The glazing units are hung onto the building frame with specialized accessories for easy and quick on-site installation, greatly reducing cost. 
  • MU4200 Structural and MU4200 Step Structural have the important advantage of flexibility. Any fixed frame can be converted to an opening frame by simply changing the accessories, providing the choice of top hung projected openings at any part of the entire screen.
  • Accommodate a wide range of shading solutions and are compatible with the MUSKITA range of windows and doors.
  • Custom made solutions are offered for specific project requirements.
  • Metal and finishing directly from our own in-house production lines assures quality, fast deliveries and offers substantial cost reductions via mullion length optimization for value added engineering.
Technical Features & Solutions
  • In MU4200 Step Structural the inside of the glass pane is secured onto the aluminium frame and only the external glass is supported by structural silicone. This makes the curtain wall safer, especially in hot climates with high UV radiation and more economical, without compromising the aesthetic effect.
  • On MU4200 Structural the external and internal glass panes are fixed to the frame using a specially prepared structural silicone available only from the manufacturer. Fabricators installing the glass panes using this silicone must be approved by the silicone manufacturer for optimum safety, performance and warrantees after installation.
  • Vertical and horizontal spaces of 15 mm between the units allow easy access for cleaning.
  • Mullions are 55 mm and 70 mm hollow sections, providing very high resistance to wind pressure. The 70 mm mullion allows easy introduction of standard partitioning.
  • Mullions are interspaced at each floor so that each floor takes only the weight of its frames, which allows for better expansion and contraction.
  • Special flanges are placed on horizontal transoms to eliminate noise arising from expansion and contraction.
  • Glass units are independent of the structure and are secured at the top.
  • The systems are engineered with the advantage of being flexible. They can move up or down, left or right, greatly reducing the impact of earthquakes. Movements from seismic loads on mullions and transoms are absorbed by the specialized support brackets of the systems.
  • Mullion fixing is achieved with aluminium brackets that are adjustable left or right and up or down. Brackets can be anodized or powder coated and steel brackets may also be used.
  • The number of fixing points of the frame are in proportion to its height with no less than 4. The use of special, high resistance brackets with rounded surfaces at the contact points gives secure fixing, while also increasing freedom of movement of the frame.
  • The system offers several auxiliary profiles for the upper and lower trim of vertical column profiles and special profile joints between floor slabs.
  • The system is ventilated by the frame, mullions and transoms.
  • Our technical support team offers shop drawings for large projects, detailed static, acoustic and thermal calculations, as well as installation guidelines and support to architects and specifiers.
Technical Characteristics
Finishes & Colours
Technical Characteristics: MU4200 Structural & Step Structural
Mullion Width
55 & 70 mm
Mullion Depth
From 54.5 - 150 mm
Maximum Sash Weight
120 kg
Glass Options
Up to 33 mm
Performance & Classification: MU4200 Structural & Step Structural
Thermal Transmittance – Uw [W/(m²K)]
≥ 1.5
Sound Reduction
41 dB
Air Permeability
600 Pa
Water Tightness
600 Pa
Resistance to Wind Load
2400 Pa Service Load; 3600 Pa Safety Load
Finishes & Colours
Powder Coating
Sublimation & wood finishes
Architects & specialists - technical data

Log In is required to access our extensive cad library