Dummy base, base for supporting IBT boxes and boxes with counter formwork in conjunction with support beams, can be combined using a snap-in connection, when mounting the dummy base with nail, magnet or adhesive technology, the fastening points must be plastered later, for mounting: 1. the U 71 boxes with counter formwork, at a distance of 71 mm. Can also be combined with composite glasses for extreme loads. 2. the K3 EK and K4 EK installation box with counter formwork with 2 or 4 bases and 3 support beams in the corners, height 25 mm for nail fasteningDimensions: 78.8 x 71 x 25.3 mm
