Credit: Internorm


Internorm Windows’ KF500 model features a modern look and energy-efficient design. A high-glass proportion and no visible bead inside the frame complement a thermal insulation value of up to 0.69 w/m2K. The UPVC and aluminum windows also are available with an optional mechanical ventilation heat recovery system that provides a supply of fresh air while reducing the home’s heating and cooling costs. internorm.co.uk