Legnolegno is a National Consortium of services founded in 1987 which aims to qualify business activities and products in the window and door sector. The Legnolegno brand is known and recognized by all companies in the supply chain. He currently associates 910 window and door frames and collaborates with over 5000 manufacturing companies together with 1300 companies in the supply chain, and is controlled by entrepreneurs through a shareholders' meeting formed by the associated companies.