Ceiling duct element for transferring e.g. heating spacer in concrete ceiling of building, has indicator comprising projection movable from starting position, where projection is raised up between port and opening and spaced in channel

摘要

The element (1) has a hollow body (3) including a lower side provided with an aperture, where a spacer is accessible from outside via the aperture. The hollow body comprises an intake port (6) and an exhaust opening (7) for feeding the spacer, where a receiving channel (8) is arranged between the intake port and the exhaust opening. A direction indicator (9) includes a projection (11) i.e. flap, movable from a starting position, where the projection is raised up between the port and the opening and spaced in the channel. The projection is made of plastic.