Protektor 37323 - Композитный профиль для углов гипсокартона
IS-300 is a paper-concealed composite profile for the production of precise outside edges in the drywall construction. The adjusted angle allows an expeditious treatment on 90° outside edges. The embossed, ca. 13 mm wide paper wings at the ends of the legs allow an easier binding and running out of the putty, a faster drying process and a very good filler binding. The embossing also ensures an uniform paper support and offers a maximum adhesion without waviness or blistering. Inaccurate cut edges or offset joints can be concealed and don't have to be covered up separately.
Further info from manufacturer on 37323 Protektor