Modular letterbox unit consisting of Open Air SC1 modular letterbox units with fixed or adjustable depth. It is made of galvanised sheet metal tube and interchangeable aluminium door, thickness 20/10, anti-vandal system with book-type opening and 250×24 mm letter slot protected by an inward-opening panel with spring return.
Possibility of inserting push-button panels for intercom or panels for video intercom.