Smartabox Locking Parcel and Mailbox accepts packages up to 12.6"x12.6"x9.4", Dark Gray This is Great for Multiple Deliveries Maximum Parcel Size: 12.6"x12.6"x9.4" (overall 17.9"x18.5"x41.5") Bolts Securely to the Ground or to a Wall Made from Strong Galvanised Steel Secure Locking System