The XT family is growing: with variable opening on the inside and underneath the EXTE EXPERT XT is ideal for renovation. Small and compact, it meets all requirements in terms of maximum comfort in the smallest space. And the big advantage is not only the insect protection between shutter slat and window – the option of plastering over the box on the inside and outside enhances its range of uses. Intelligent details such as the universal bearing plate or identical parts within the XT series create added value for craftsmen.