| 摘要 |
A universal fitting for mounting a component to a wall, ceiling or floor, comprising an open-ended cylindrical body for recessed installation in an aperture in said wall, ceiling or floor, the cylindrical body having a mounting surface to receive a component inserted into one end, the cylindrical body being lined with an intumescent material configured to expand and close off the other end of said cylindrical body when the temperature of the fitting reaches a predetermined level. |
