| 摘要 |
PROBLEM TO BE SOLVED: To prevent foreign matters from entering by easily and inexpensively closing an end opening of a ventilation pipe for a certain period of time without damaging an outer wall by cutting later an end part of the ventilation pipe projecting from an outer wall surface; to discharge some rain water entering the ventilation pipe to the outside.SOLUTION: A closing tool includes a closing part 2 for closing the end opening 22 of the ventilation pipe 21 to prevent foreign matters from entering the pipe from the end opening 22, and fitting ribs 12 press-fitted to the end opening 22 of the ventilation pipe 21 to be fitted to an inner wall surface 24 of the ventilation pipe 21 for freely removably mounting the closing part 2 to the end opening 22. |
