| More topics under "E06 - Doors, windows, shutters, or roller blinds, in general; Ladders" (150,774) |
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| E06B - Fixed or movable closures for openings in buildings, vehicles, fences, or like enclosures, in general, e.g. doors, windows, blinds, gates (136,417) |
| E06C - Ladders (14,357) |