The present standard definesThe testforce required for shutters and blinds.methods to be carried out to determineThe operatingIt applies toThe following products:一Internal blinds:internal venetian, roller, vertical and pleated blinds.·External blinds:Foldingawning, marquisolette,awning, Dutch awning,arm awning, trellis arm awning, verticalfacade awning, roof light awning,insect screen awning, louvre array.verandahroller awning, pivot armawning or conservatory一Shutters:External(vertical or projected),venetian blind, roller shutter (vertical orflat-closing concertinaprojected) venetian shuttershutter, concertina shutter, sliding panel shutter).Shutters with a projection system are also covered.The test described establishThe effort or force necessary to result一inThe movement or displacement of the curtain during both extension and retraction一to project shutters,一to tilt laths.