Here you can view our huge range of horizontal, vertical and rear access letterboxes for apartments and flats, most of which conform to European Norm EN13724, secure Homes Guide police initiative, and are Royal Mail Large Letter compliant. These multi unit / banked solutions are designed to accept A4 post without having to fold or bend the envelope, and come with secure locks (all to differ) and anti-theft baffles to help prevent unauthorised access to delivered mail by “fishing”.