Schörghuber Spezialtüren KG manufactures timber-based functional doorsets at Ampfing in Upper Bavaria, covering fire resistance classes T30, T60 and T90 alongside smoke-control leaves to DIN 18095. Its T30 timber doorsets are placed on the market under a DIBt allgemeine bauaufsichtliche Zulassung of the Z-6.20 series (Z-6.20-1934) and are CE-marked to EN 16034 in combination with EN 14351-1. Production is subject to ift Rosenheim third-party surveillance, and the firm publishes classified performance for twelve tested door functions.