Cut off systems of open slav

PURPOSE: A cutoff system for an open wall is provided to prevent noise, construction materials, inner forms, and dust from being discharged to the outside by cutting off the opened section of an open wall. CONSTITUTION: A cutoff system for an open wall comprises an outer frame(40) and a shield plate(50). The outer frame is installed in the bottom end of a vertical beam, which supports the form part of a gang form(20), and is adhered to the edge of the opened section of an open wall. The shield plate is fixed to the outer frame and cuts off the opened section of the open wall.