Box for two user modules composed of: metal box made of galvanized steel 500 x 800 x 120 ÷ 170 mm, indoor painted steel frame white RAL9010 (with depth regulation 0÷50 mm) and indoor painted steel cover white RAL9010, shut-off ball valves for heating circuit with 3/4”M and 1”F connections with loose nut, shut-off ball valves for sanitary circuits with 3/4”M and 3/4”F connections with loose nut (with or without integrated non-return valve), galvanized steel templates for the fixing of the shut-off valves on the bottom of the box. Developed for third sanitary line. Complete with predisposition stub pipes kit.