The uniquness of this box is in that we don’t have to use any tools for punching out the knockouts for tubes, cables or conduits. The knockouts can be opened on site, without using any tools. In the box can be installed M25 or M20 tubes, or the combination of both, if necessary. Simply nail the blue
box onto the formwork, punch out the knockouts, and insert the tubes. Finally, close the box with its compatible green cover. Boxes are stackable.