Do you want to keep your mail and small packages safe? The USPS approved Mail Boss Package master locking security mailbox post will do just that. It offers unrivaled security and protection against mail identity theft, package theft, and vandalism. Not only does it function as a standard mailbox but it can also accept small packages and parcels (H 3.5" - 4.5" x W 3.5" - 4.5" x L 10.5"). Installation takes mere minutes with the patented Fast Trak Mounting System, and everything you need is included with your purchase, including reflective house numbers, drill bit and mounting hardware. Features: U.S. Post Master Approved for curbside delivery Accepts small packages up to: H 3.5" - 4.5" x W 3.5" - 4.5" x L 10.5" Full service, extra-large capacity curbside locking security mailbox 12/14 gauge electro-galvanized welded steel Stainless steel hinges for ease of use Patented anti-pry latch locking mechanism Patented Mail Shield technology prevents fishing Locking access door with commercial grade 12 disc high-security wafer lock Patented Fast-Trak Mounting Plate for quick installation Durable powder-coated finish Includes: vandal resistant flag, 3 keys, reflective house numbers & installation hardware Included in the Box: QTY Item Link 1 Mail boss Package Master Security Locking Mailbox view Item Here 1 In-Ground / Optional Surface Mount Post In-Ground / Surace Mount Optional Newspaper Holder view Item Here *All Hardware Required for Installation Dimensions: Mailbox Height (inches) Width (inches) Depth (inches) Mailbox 16.5" 12" 21.5" In-Ground Post 43" 4" 4" Surface Mount Post 27" 4" 4"