Wostol has made timber doorsets at Luboń near Poznań since 1991 and states it produced its first fire doors in 1994. Its system of internal timber doors and partition segments holds Krajowa Ocena Techniczna ITB-KOT-2020/1458, second edition, issued in November 2025 and valid to November 2030, covering internal timber doors and partition segments for use as fire doors and non-loadbearing internal walls. The company declares EI 30 and EI 60 fire resistance combined with smoke-tightness and acoustic performance to forty-six decibels. Doors are supplied solid or glazed, single or double leaf, and the firm installs as well as manufactures.