Finally, Isik A is the version where the external frame has a cantilever of only 12 mm from the shutter, with exposed metalware and classic handle. The dripstone features invisible water evacuation holes in order to improve the aesthetic look. The 90° coupling system in the corners of the external aluminium profiles (proprietary patent) enhances the minimal design of this line. It is also available, like all Sciuker collections, with triple glazing for a better thermal and acoustic insulation.