TOSTEM is a globally recognized brand of windows and doors. It is a part of LIXIL, Japan’s most respected name in building materials, housing products and services. The TOSTEM brand mission is to foster comfortable daily lives for people around the world. For more than half a century, TOSTEM has overcome challenges in the pursuit of quality and performance as an expert in the field of windows and doors, contributing to the comfort and safety of people’s homes and enriching their lives. TOSTEM’s innovative designs and industry-leading technologies have won it accolades in Japan and around the world.