| 摘要 |
A down spout adaptor assembly includes a down spout adaptor and a storm sewer entry adaptor, the down spout including a tapered asymmetric tube having an arcuate bead projecting outwardly around the lower end thereof, the storm sewer entry adaptor including a cylindrical structure having an arcuate bead around the upper portion thereof, the arcuate bead on the down spout adaptor being insertable into the arcuate bead on the entry adaptor.
|
