The document definesThe tests to be carried out to determineThe ability of the shutters and blinds to resist abnormal use of the operating mechanism in terms of rough/forced/reversed operation. It applies toThe following products:Internal blinds:internal venetian, roller, vertical and pleated blinds and darkening blind. External blinds:folding arm awning, trellis arm awning, vertical roller awning, pivot arm awning, marquisolette, fa嘺de awning, roof light awning, verandah awning or conservatory awning, dutch awning, insect screen awning, louvre array. Shutters:External venetian blind, roller shutter (vertical or projected), venetian shutter (vertical or projected), flat-closing concertina shutter, sliding panel shutters. Shutters with a projection system are also covered.