Abstract: A combination of a cover plate and a drain, preferably a floor drain is described. The cover plate is provided with first locking means and the drain is provided with cooperating second locking means for releasable connection of the cover plate to the floor drain. The cover plate is a temporary cover plate for use during installation of the drain. The cover plate may be used for a temporary protection of a drain during installation of the drain and for installing and adjusting the inclination of the drain without the need of separate levelling tools. To obtain this the cover plate is provided with levelling means for determining the orientation of the cover plate and thereby also the drain in relation to a horizontal or a vertical plane. The first locking means or the second locking means comprises a weakening arranged such that at least a part of the locking means is preferably damaged when the cover plate is removed from the drain to ensure that the cover is not reused.

Abstract: A combination of a cover plate and a drain, preferably a floor drain is described. The cover plate is provided with first locking means and the drain is provided with cooperating second locking means for releasable connection of the cover plate to the floor drain. The cover plate is a temporary cover plate for use during installation of the drain. The cover plate may be used for a temporary protection of a drain during installation of the drain and for installing and adjusting the inclination of the drain without the need of separate levelling tools. To obtain this the cover plate is provided with levelling means for determining the orientation of the cover plate and thereby also the drain in relation to a horizontal or a vertical plane. The first locking means or the second locking means comprises a weakening arranged such that at least a part of the locking means is preferably damaged when the cover plate is removed from the drain to ensure that the cover is not reused.

Abstract: Ductwork, for arranging at least one pipe through an opening in a partitioning, has a flange with a central area having a guide opening for every pipe, the flange having plural mounting apertures, an inner side of the flange being adapted for bearing against a side of the partitioning. The ductwork also has a connecting arrangement mounted in each mounting aperture and has a force transmitter with an operating member disposed over an outer side of the flange. A shank extends through the mounting aperture, over which a clamping device is displaceable around and/or along the shank by actuating the operating member. An engagement arrangement disposed between the inner side of the flange and the clamping device has contact surfaces interacting with contact surfaces on the clamping device, and engaging faces that are displaceable radially relative to the shank by the operating member.