İkitelli Organize San. Bölgesi ESOT Sanayi Sitesi J Blok No:3-5 Başakşehir, İstanbul, Türkiye
Birlik Menfez was established in 1985 by Nazım Çelik and operates in the field of ventilation equipment manufacturing. Since its inception, our company has adopted quality, trust, and customer satisfaction as its fundamental principles, becoming a reliable brand in the industry.
Birlik Menfez, which manufactures vents, diffusers, dampers, shutters, anemostats, and ventilation system equipment, provides solutions for both individual and large-scale projects with its strong production infrastructure and experienced team.

Activities began with metal sheet production in a 30 m² workshop in Vefa.
Moved to a new manufacturing facility in İkitelli Esot Industrial Site.
The machinery park was expanded and production capacity was increased.
A new department was established for the production of ventilation equipment.
Assembly services began for housing and factory projects.