RED DOT AWARD 2019

TOSTEM LW is a window developed to realise a bright and comfortable living for the residents. In addition to high heat insulation performance, it has a design and structure that allows you to feel the maximum connection with the outside by the window. With a frame-in design in which all frames on the top, bottom, left, and right cannot be seen from inside the room even when opened or closed, a design with a built-in lock handle in the vertical frame.