Description: 【Product list】: 1 Wall Mount Mailbox, 4 expansion nails, 2 keys. The internal dimensions are 32.7cmx22cmx9cm; the external dimensions are 34.6cmx26.5cmx10cm. 【Wall mounted design】: Wall Mount Mailbox adopts a hollow backs design, which is installed against the wall, saving space and easy to install. 【Buckle cover design】: Locking Mailboxs buckle cover design is waterproof and rainproof. Large opening, large capacity, easy to put in and take out. 【Lock design】: Postbox lock design ensures the storage of small parcels, cards, and checks. 【Scene】: Letter Box is suitable for community walls, post office walls, office building walls, street walls, schools, factories, etc. Specification: Material: PP Size Chart: External Dimensions: 34.6cmx26.5cmx10cm/13.62inchx10.43inchx3.94inch Internal Dimensions: 32.7cmx22cmx9cm/12.87inchx8.66inchx3.54inch Package Includes: 1 Mailbox 4 Expansion Nails 2 Keys Note: Please allow slightly errors 1-2cm differences due to manual measurement.