1.1 General This European Standard specifies the standardization of side curtain ventilation systems supplied for environmental control, installed on farm buildings, that use a barrier made from a flexible foil or fabric which moves via a rolling or folding action, or rigid panels that slide, as far as safety aspects, performance and sustainability issues are concerned. Included are machines that operate using the potential energy stored by the earlier application of human or animal force, such as stretched springs. This European Standard does not cover operation in environments where the electromagnetic disturbances are outside the range of those specified in EN 61000-6-3. 1.2 Exclusions This European Standard does not apply to the following which are intended for a different use: doors and side curtains when used as doors which are specified in EN 13241-1:2003+A1:2011; systems inflated by air; screens supplied for the control of fire or smoke; screens that move instantaneously upon the application of human force; side curtains when used to control ventilation conditions in a toxic or explosive environments. This European Standard does not cover the radio part of side curtain systems. If a radio operating device is used, the relevant ETSI standards should be applied in addition.