Free-standing letterbox with upright tubes to accommodate four letterbox or storage compartment modules. Eight module slots to accommodate information sign modules, panel lights, and function modules in the upper section. Intercom module and other function modules in the ergonomically easy-to-use area. Aluminium profile with base flange. Letterbox housing with aluminium rear panel, fully coated or painted. Complete with letterbox housing, standpipes, and base flange with fixing accessories such as heavy-duty dowels.