The new Heavy Duty Lift Sliding Door from Luvindow allows for the covering of large openings while ensuring exceptional thermal insulation. lts 80 mm deep sashes and multi-chamber thermal breaks allow it to achieve a Uw transmittance of just 0,65 W/m, establishing itself as one of the sliding systems with the best thermal performance on the market. Furthermore, the perimeter interlock profile is reduced to 120 mm, allowing for an increased glazed surface and enhancing the entry of natural light into the rooms.