Bengglas | C22

Bengglas is the best insulating glass in the world. With a u-value as low as 0.4 Bengglas is even more energy efficient than triple glazing. Bengglas has a fifteen year guarantee and is toughened. And because Bengglas is only 8.3mm thick it looks just like single glazing. So now you can have incredible energy efficiency without the huge ugly section sizes associated with triple glazed windows and doors.