The Oasis Classic Locking X-Large Stainless Steel Post Mount Parcel Mailbox is a stylish and secure mailbox designed for oversized envelopes and packages. With a mail capacity of 2256 cubic inches, this extra-large mailbox features a lockable front access point for added security. Made of galvanized steel and weighing 22.44 pounds, this mailbox is durable and sturdy for long-lasting use. It includes keys, outgoing mail indicator, and is US Postmaster General approved, making it a reliable choice for your home or business.