This European Standard specifies the tests to be carried out to determine the mechanical endurance of products comprising :- internal blinds,- external blinds,- shutters,according to a defined number of extension/retraction cycles of the curtain and tilting of the laths (for blinds and shutters with tilting laths).It applies to complete products e.g. those equipped with their hardware and operating mechanisms in normal operating conditions.Manual override mechanisms for use in case of mechanical breakdown are excluded when they form part of motorized blinds and shutters.