| 摘要 |
An air duct section is formed from at least two longitudinal duct portions that snap together to form a hollow duct having a longitudinal direction. The duct section has a pair of ends that are adjustable between male and female configurations. The interlocking device used to connect the duct portions allows continuous adjustability between the first end and the second end of the duct section while minimizing air leaks and providing structural integrity to the duct section.
|
