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CW400 High Performance Stickwall - 4 Sided Mechanically Engaged


The CW400 series is a high performance American pressure glazed stick curtainwall system. It has been a leading system (four-sided, mechanically entrapped) in the USA. It lends itself to automated production and is extremely fast to erect on site (2 floors at a time) from inside the building. Each stage of erection and glazing can be easily inspected to prevent any leaks occurring in the finished curtainwall and the building can be closed in and made water-proof in a mill finished state.  

The coloured external trims are applied when the building is nearing completion to keep in an undamaged and pristine finish, obviating the need for protection. This feature allows thermal separation, is cost effective and has the ability to provide different colours inside and out. The system incorporates neoprene gaskets fully moulded at the corners and with internal tubular gaskets to give a controlled pressure to the glass over the total perimeter. All glazing is carried out from the inside (depending on design application). 

Product Features

  • An extremely versatile system to accomodate complex architectural geometry.
  • A complete drainage system is incorporated to drain water at every lite.
  • A very wide range of glass and panel thicknesses can be accommodated in the design and opening vents can be incorporated, should this be necessary. The system, which is designed to span two floors, sets out to use the minimum amount of aluminium to meet the design requirements of the specification or specific aesthetic demands.

  • All internal aluminium covers, cills and head trims are isolated from exterior aluminium against the transfer of heat or cold by the use of PVC isolators, giving a complete thermal break. The work is erected and glazed using mill finish aluminium.

Section Sizes

64mm Mullions
64mm / 102mm Transomes


We recommend using Masterspec 4211TS Thermosash Curtain Walling when specifying this suite.

Surface Finishing 

Polyester powdercoat  - Both standard and special colours available.
Anodised - All anodised colours available - commercial grade 20 micron finish recommended.
PVF2 Flourocarbon finishes - Available on request.

Performance / Testing

  • AS/NZS1170 (Structural Design Actions)
  • NZS4211 (Performance of Windows)
  • NZS4223 (Glazing in Buildings)
  • NZS/AS4284:2008 (Water / Air Pressure/ Air Leakage - Meets and exceeds minimum requirements)

Maximum Spanning Ability

Thermosash specifically engineers the best suite option for your project taking into consideration span, structural system, and environmental loads (e.g. wind). The spanning ability will vary depending on the above. 

Thermosash Suites are recognized as having the largest spanning systems on the market due to our specific engineering capability and the customised nature of the work we complete.


The standard warranty is 5 years from the date of practical completion for these products. This covers workmanship and weather tightness, providing the subcontract includes fabrication, installation and glazing of all components. 

Downloads Available 

Please go to our resource section or click below for the relevant downloads: 
CW400 High Rise Stick Wall, 4 Sided Mechanically Engaged
Masterspec 4211TS Thermosash Curtain Walling

National Bank Tower

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