The Profirst Mail PM 320 Letterbox: This wall mounted post box is an excellent choice for safe and secure mail storage and for accommodating extra large items. A nameplate on the front of the mailbox provides personalisation and easy identification. The mailbox is secured by a cylinder lock and supplied with 2 keys. Made from high-grade rustproof galvanised steel, it is weather resistant and waterproof. Installation instructions and fixing screws are included.