Berkvens manufactures interior doors, frames and complete doorsets — including fire- and smoke-resisting versions — at Someren. It holds SKH-KOMO attest-met-productcertificaat 20733/25 for binnendeuren en binnen(deur)kozijnen under BRL 2211, issued by certification body SKH on 26 September 2025 and current in the KOMO register, plus STIP certificate SKH-STIP-00048.