The TW70 TruEnergy Window by Jack Aluminium offers true energy efficiency, easy fabrication and PAS 24 security.

Ideal for use in all commercial and local authority applications including retail, sports and leisure facilities, medical facilities including hospitals and educational buildings like schools, colleges and universities. TW70 can also be installed in domestic properties.


Thermally Efficient Windows

The TW70 window system has been engineered so that thermal breaks can be positioned in the most efficient way. Thermal infills are easily slid into the aluminium window profile to achieve U-Values of 1.4 W/m2K with a double-glazed unit. U-Values of 1.2 W/m2K can be achieved with triple glazing.


TW70 Performance Benefits

To help fabricators and installers achieve the security levels specified by architects and developers, the TW70 window has PAS 24 accreditation on all of its window variations: Top Hung, Side Hung, Tilt and Turn.

The system is fully compatible with PVCu hardware, so fabricators don’t need to hold double hardware stocks. To suit each individual customers’ preference, we designed the TW70 window system to be fabricated in two ways, it can be crimped or fabricated with mechanical Monticelli cleats.

System Features
  • Slimline frame
  • Internal & External beading options
  • Value engineered with fewer components
  • Straightforward and simple manufacture and installation
  • Two cleating options
  • PAS 24 tested
  • Design to accept PVCu hardware
  • Available in 5-7 working days in any standard RAL colour
Weather Performance
  • U-values from 1.4 W/m2k double glazed
  • U-values from 1.2 W/m2k triple glazed
  • Tested to BS 6375 Part 1:2009 Part 1: 2000Pa Classification for weather tightness
For any other Thermally Efficient Windows requirements please download brochure or download technical manual or contact us on 024 7646 7449 or Email us on

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