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Sku: 7105x3-7141-post


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  • Triple Threat! The mailboxdepotusa€™ solution to high security multi-unit mailboxes.
  • The Mail Boss mailbox triple post mount system is designed for residential curbside mail delivery and to accommodate three separate mailboxes mounted on a shared mailbox post.
  • Each Triple Mailbox Post package includes 3 of Mail Boss€™ popular high security locking mailboxes, featuring commercial grade security features including a y-pin brass core tube lock, patented anti-pry latch locking system and 12 and 14 gauge steel with powder-coat finish.
  • This triple Mailbox Post Design uses the Mail Boss 3 Box Spreader Bar, constructed from 12-gauge galvanized steel. When mounted to the Mail Boss post, three mailboxes can be securely mounted.
  • Select an In-Ground Post if you plan to dig a hole or install over an existing 4x4 post, or a Surface Mount Post option for fastening the post to the sidewalk or curb.
  • Mail Boss€™ popular Fast-Trak Mounting system and hardware makes it easy to install these multi unit mailboxes in just a few minutes.
  • The Mail Boss tri mount mailbox and post system comes in 4 powder coat color options: Black, White, Bronze or Granite.
  • The mailboxdepotusa also provides the Three Mailbox Post system with 3 sets of 3 keys, reflective address numbers, drill bit and post mount mailbox installation hardware.
  • Not what you had in mind? View more Multi-Unit mailboxes at mailboxdepotusa.
Weight 132 lbs
Shipping Info Ships FAST: 1-3 Business Days
Learn more about our Estimated Lead Times
Brand Mail Boss
Multi Family Type Triple Mailbox Post System
Mount Type Post Mount
Material Galvanized Steel
Mailbox Size Extra Large
Mailbox Style Modern
Mailbox Type Multi-Family Mailbox & Post Combo
Dimensions 21"D x 11.25"W x 13.75"H
Security Locking
Mail Capacity Small Packages
Included Accessories Includes Post
Delivery Type USPS Delivery
Access Type Front Access
Shipping Estimate Ships FAST: 1-3 Business Days
Learn more about our Estimated Lead Times
Stock Status In Stock
Ships To Ships to the 48 contiguous United States. For AK or HI delivery, please contact us for a shipping quote.
Ship Method Ships via USPS, UPS, or FedEx Standard Ground.
Shipping Policy

Thank you for your order! We will ship your order using the fastest, safest, and most reliable method possible. Small and medium-sized parcels will usually ship FedEx or UPS Ground, while large commercial items will ship via common freight carriers such as YRC, XPO Logistics, etc.

Every product on our site has been carefully selected to ship by a particular shipping method in order to provide you with an optimal delivery experience.

When your order ships, we will notify you via email. Included in your email will be a tracking number for your shipment. We encourage you to track your package online or on the phone with the carrier. Most companies can provide an estimated delivery date.

View our Full Shipping Policy here.
Return Policy

We offer a 30-day return period from the date of shipment. We will refund your order total, less our cost of shipping the item to you. In most cases, you will be responsible for the cost of shipping the item back to us.

Important: Orders returned without authorization will NOT be processed for credit or refunds. YOU MUST obtain a Return Goods Authorization Number (RGA#) from us so that the credit for the merchandise and any refund can be properly processed.

View our Full Return Policy here.