Patent ID: 7230185

Claim:
A cap for wiring pass-through hole comprising first and second cylindrical members to be fitted onto an inner face of a wiring pass-through hole provided in a wall board in a manner faced to each other and having engagement means to engage said cylindrical members to each other so as to hold said wall board between them in accordance with a thickness of the said wall board; first and second lid-like members to be fitted onto inner surfaces of said first and second cylindrical members so as to close these cylindrical members; and removal prevention means to engage said first and second lid-like members with said first and second cylindrical members so that said first and second lid-like members are prevented from being removed out of said first and second cylindrical members in such a manner as to be able to be released therefrom; said first and second lid-like members having first and second small quantity wiring pass-through openings defined thereby, respectively and released from the prevention of removal from said first and second cylindrical members so as to be removed therefrom whereby said first and second cylindrical members are exposed so as to form a large quantity wiring pass-through opening.