Easy hollow ceiling anchor for installation in prestressed concrete hollow ceiling slabs. When the screw or nut is tightened, the cone is released from the anchor sleeve and pulled into it. This causes the dowel to expand in the cavity and create a positive fit. The hollow ceiling anchor can also be used if the expansion area is not in a hollow chamber. The component can be attached using commercially available screws and threaded rods. General building approval Z-21.1-1785 from the DIBt, Berlin, including permissible loads under fire exposure up to a fire resistance period of 120 minutes.
