Box for use in hole of plaster or masonry drywall to accommodate electric apparatus, has tab occupying rest position in which tab is rotated toward center of box and housed in fold housing whose portion is formed from elastomer

摘要

The box has a retaining device for retaining the box in a hole and handled by a handling rod i.e. adjusting screw (36), perpendicular to a circular bottom (31) of a case (3). The device is formed by a radial retaining tab (37) mounted on the screw. The tab occupies a retaining position in which the tab projects outside the box and a rest position in which the tab is rotated toward center of the box and housed in a foot fold housing (40), closed toward interior and formed in a cylindrical skirt (32) and/or the bottom. A portion of the housing is formed from elastomer.