GARANT produces interior doors, frames and function doors, with fire doorsets tested to DIN EN 1634-1 and DIN 4102-5, durability to DIN 4102-18 over 200,000 cycles, and smoke tightness to DIN 18095. Its own product pages name the DIBt allgemeine bauaufsichtliche Zulassung Z-6.20-2095 covering the T30-1-FS30, T30-1-RD-FS30, T30-2-FS30 and T30-2-RD-FS30 types, and state that mandatory external factory surveillance runs for the life of the approval.