The Dutch operation of the Theuma doorset group, supplying engineered door and frame combinations with fire- and smoke-resisting performance from Nijkerk. It holds SKH-KOMO attest-met-productcertificaat 20953 for binnendeuren en binnen(deur)kozijnen under BRL 2211, issued by SKH, together with SKH management-system certificate 60031 (VCA*).