with slats disappearing in each other; with slats the distance between which can be altered

Full Title

Screening or protective devices for openings, with or without operating or securing mechanisms; Closures of similar construction (E06B5/10 takes precedence; wings for doors or windows, connected at their edges, E06B3/48; additional indoor equipment of doors or windows, not forming part of the proper finishing work of a building, e.g. curtains, A47H; gratings as building elements E04C2/24; fastening means E05; operating-mechanisms for wings in general E05F) > Shutters, movable grilles, or other safety closing devices, e.g. against burglary (louvre windows or grilles E06B7/08; lamellar blinds E06B9/26) > Roll-type closures (roller blinds E06B9/40; operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; usable only as awnings E04F10/06) > Roller shutters > with closing members formed of slats or the like > with slats disappearing in each other; with slats the distance between which can be altered