| 摘要 |
<p>The duct has a duct unit, and a support leg (10) for attaching on a building floor. The support leg has a rotatably supported threaded rod (14), a base plate (12) and a retaining element (16) connected with the duct unit. An engaging unit (18) moving axially to the threaded rod is provided at the retaining element. The engaging unit is provided with an inner thread at an end of the engaging unit, where the end faces the thread rod. The threaded rod is rotatably supported at the base plate, and is provided with a longitudinal guide (46) for engaging a tool.</p> |
