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Mail Boss Package Master Quad Mailboxes with Post

  • The ultimate post mount 4 unit mailbox!
  • Designed for mail delivery to up to 4 residences at one location.
  • These USPS approved 4 Unit Mail Boss Package Master kits come with all the required components for fast and easy mailbox installation including 4 Mail Boss Package Master locking mailboxes, a 4 Box Spreader Bar, Mail Boss post plus 4 sets of 3 keys, installation hardware and reflective mailbox address numbers.
  • Each Mail Boss locking mailbox features extra-large capacity to safely store weeks’ worth of mail, including small packages and magazines. Vandal-proof red flag marks new mail delivery.
  • Make use of the outgoing mail slot, incoming mail slot (featuring patent-pending “Mail Shield” technology by Mail Boss prevents fishing) and a large mail retrieval door.
  • Heavy-duty commercial grade galvanized steel, commercial grade 12-disc wafer lock and patented anti-pry latch makes the Mail Boss Package Master security mailbox virtually impenetrable.
  • Fast-Track Mounting system makes it easy to install these Quad Security Mailbox kits in minutes.
  • The 4 Box Spreader Bar fastens to the post providing a surface to mount all four Mail Boss mailboxes.
  • Choose from an In-Ground or Surface Mount Post design, made from heavy-duty 14 and 10 gauge galvanized steel.
  • Ultra durable powder-coat color options include Black, Brown, Granite or White.
  • View MailboxWorks’ full line of Multi-Unit mailboxes.
Available Finishes
Mail Boss Package Master Mailbox Black
Mail Boss Package Master Mailbox Bronze
Mail Boss Package Master Mailbox Granite
Mail Boss Package Master Mailbox White
Self Applied Front and Side Lettering
Mail Boss Package Master Mailbox Lettering
Mailbox Posts
Mail Boss Mailbox In-Ground Post
In-Ground Post
Mail Boss Mailbox Surface Mount Post
Surface Mount Post
Mail Boss Package Master Mailbox Specs
Order Your Mailbox
Our Low Price: $1,124.00FREE SHIPPING
Availability: In Stock Ships In 24-48 Hours
Mail Boss Mailbox Finish More Info
Mail Boss Mailbox Post More Info
Front Lettering - Self Applied
Self Applied Front Lettering More Info
Mailbox Details
Item Number:
  • Mailbox
  • In-Ground Post
  • Surface Mount Post
  • Quad Spreader Bar
  • Mailboxes
  • In-Ground Post
  • Quad Spreader Bar
  • Lock with 3 Keys
  • Reflective House Numbers
  • Installation Hardware
  • Mailbox
  • 16"H x 12"W x 21.5"D
  • In-Ground Post
  • 43"H x 4"W x 4"D
  • Surface Mount Post
  • 27"H x 4"W x 4"D
  • Quad Spreader Bar
  • 2"H x 47.5"L x 5"D
  • Mailbox
  • 50 lbs
  • In-Ground Post
  • 14 lbs
  • Surface Mount Post
  • 16 lbs
  • Spreader Bar
  • 13 lbs
  • Mail Boss Mailboxes
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