To guarantee that nothing twists while we are filling the frames with fire insulation, all of the cabinets are first secured. We call this preparation and, in brief, involves us securing the walls internally and the opening where the doors will be fitted. When fixing the door hole, a solid panel with the same piston positions as the doors (see illustration) is used, which further guarantees the fit. Afterwards, we lay the frames down front first on trolleys and secure them in magazines of 10-12 cabinets per trolley.
Because we use the same frame for both our fireproof filing cabinets and our fire resistant cabinets, the procedure is the same for both series.