XT66 Casement & Tilt turn window system


The XT66 high performance window system has been developed by AMS, in Cork to satisfy the highest of thermal requirements that the modern building industry demands, exceeding all building regulations with its superior performance and energy efficiency characteristics. 

XT66 system comes fully certified to the CENsolutions Gold standard quality system, and is fully “Secured by Design” approved. In addition to our stringent quality and security testing, the XT66 system also offers a heavy duty, Category 3 status for repeated opening and closing in excess of 20,000 cycles.

The XT66 retains our 66mm profile configuration, allowing for glazing depths between 28mm and 48mm units. It is through this glazing configuration that we can offer window U values as low as 0.85 W/m2K. Achievable energy ratings range from “A” Rated for triple glazed units and “B” Rated for standard double glazed units.  All screens utilising the XT66 system may be internally or externally glazed and offers Casement and Tilt & Turn sash options as standard.

The AMS XT66 further enhances our current window and curtain wall suites of TS66, RBS66 and MU800 systems through its seamless compatibility and interchangeability, which offers architects, fabricators and end-users alike a range of configurations and capabilities never before seen in the commercial market place.  This places the AMS XT66 system at the forefront of modern window and glazing technology.


  • Quality assured through the CENsolutions ‘Gold’ standard quality scheme.
  • SBD Certification
  • Can take Double or triple Glazed units from 28 to 48mm.
  • U values as low as 0.85 W/m2K.
  • Patented thermal break technology unique to AMS.
  • Various sash options available.
  • Extensive range of extruded cill options.
  • Can be internally or externally beaded.
  • Tested to 900Pa on Water.


Security Performance:

Tested to PAS 24:2012 and offers SBD Certification.

 Thermal performance:

  • U-values as low as 0.85 W/m2K, contact our technical department for further information. U-value based on 1230 x 1480mm high window with full opening sash.

Weather Performance:

  • Tested to BS 6375 - 1: 2009.
  • Air Classification – A4: 600 a
  • Water Tightness – E900: 900 Pa.
  • Wind Resistance – EA2400 & 5A: 2000 Pa.

Operation Performance:

  • Tested to BS 6375 - 2: 2009.
  • Resistance to racking – Class 3.
  • Resistance to static torsion – Class 3.
  • Resistance to repeated opening and closing – Class3 (20,000 cycles).
  • Operating forces – Class 1.
  • BS 6375 – 3:2009, basic security test – Pass.

Related Links:

CENsolutions quality scheme

Secured by Design







U value matrix,

U-value calculation is based on a window 1230 x 1480 high with full sash.

Architectural & Metal Systems,
Wallingstown, Little Island,
Cork, T45 VP40.

Tel: +353 21 4705100
Fax: +353 21 4705199
Email: pohara@ams.ie

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