Our creativity and technology continue to transform the steel window industry. Here at Fabco Sanctuary, we’re able to offer the slimmest, most thermally efficient and secure steel W20 windows and doors in the world. All our external products come with a Thermal Energy Rating of ‘B’ as standard, and our doors are available with Multi-Point Locking PAS24:2016 certification on request. Our unique approach to advance the capability of our products ensures we are always setting new standards for the industry.