Mail Boss Quad Mount Locking Mailboxes with Post

Mail Boss Locking Mailboxes Quad Post
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Retail Price:$1062.60
Our Price:$924.00
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  • In Stock
  • Ships in about 1 to 3 business days.
  • The ultimate in Quad Mailboxes!
  • This USPS approved quad mount mailbox sets the standard for high security and the best protection against mail theft, identity theft and vandalism.
  • Each Mail Boss Quad Mount Mailbox system comes with 4 of Mail Boss’ highly popular locking mailboxes. Each locking mailbox features a commercial grade 12-disc wafer lock, patented anti-pry latch locking system and 12 and 14-gauge steel complete with powder-coat finish.
  • This 4 multi-mount mailbox system comes with Mail Boss’ 4 Box Spreader for mounting the 4 mailboxes. This turns the Mail Boss’ legendary post into a multi-mailbox solution! Made from 12-gauge welded steel and available in matching powder-coat finishes.
  • Choose from the standard In-Ground Post or upgrade to the Surface Mount Post if you need to fasten this Mail Boss multi-unit mailboxes to the sidewalk or curb.
  • Attractive powder coat finish options include Black, White, Bronze or Granite (see below).
  • Each Quad Mount Mailbox system also comes with 4 sets of 3 keys, plus reflective house numbers, drill bit and post mount mailbox mounting hardware.
  • Check out more Multi-Unit mailboxes online at The MailboxWorks.
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Product Details


Item Height (inches) Width (inches) Depth (inches)
Mailbox 13.5" 11.25" 21"
In-Ground Post 43" 4" 4"
Surface Mount Post 27" 4" 4"
Spreader Bar 2" 47.5" 5"


  • Mailbox Item Number: MBMMAILBOSS
  • In-Ground Post Item Number: MBPGM
  • Surface Mount Post Item Number: MBPSM
  • Spreader Bar Item Number: MBZQUADSPRD
  • Includes: Mailboxes, Post, Spreader Bar, Lock with 3 Keys, Reflective House Numbers, All Assembly Hardware
  • Manufacturer: Mail Boss Mailboxes
  • Shipping Weight: 175 lbs.
  • Locking: Locking mailbox.

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