| 摘要 |
An accessory for use in construction includes a conduit (12) that has an inlet end (34) portion and an outlet end (18) portion. The outlet end (18) portion is mountable on a drainage pipe (22) so that the conduit (12) and the drainage pipe (22) are in fluid communication with each other. A removable closure member (40) is mounted on the inlet end (34) portion to close the conduit (12) when not in use or during building construction, so that ingress of material or detritus into the drainage pipe (22) is inhibited.
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