Mail Boss Black Heavy-Duty Square Mailbox Post 7121
Mail Boss

Mail Boss Black Heavy-Duty Square Mailbox Post 7121

|24 ratings

Key item features

  • Durable Steel Structure: Built from heavy-duty 10 & 14 gauge galvanized steel and finished with a durable powder coat, providing excellent resilience and longevity.
  • Ground Installation: Requires approximately 12 inches of in-ground burial to position mailboxes within the USPS specified height of 41 to 45 inches above the roadside.
  • Reinforcement Support: Designed to fit securely over a 4x4 wooden post for deep installations, allowing for enhanced stability and rebar reinforcement.
  • Included Hardware: Comes complete with four mounting bolts and clear instructions, ensuring a straightforward and secure assembly process.
  • Physical Dimensions: Measures 43 inches high, 4 inches wide, and 4 inches deep, establishing its exact size for proper planning and installation.
  • Classic Black: This mailbox post is presented in a classic black color, offering a standard and adaptable aesthetic.
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5 out of 5 stars
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24 ratings23 reviews
How item rating is calculated
  1. 5 stars96% (23)
  2. 4 stars4% (1)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star0% (0)
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Showing 1-3 of 23 reviews

Sep 22, 2026
Reviewer name: Zenovia
Top Reviewer
Sold and shipped byGive 5 To Cancer, Inc
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Sturdy Mailbox Post

High quality mailbox post, we purchased two for both of our mailbox's. Definitely highly recommended.

Incentivized Review
Helpful?4QAI2O5BJGXI37989329
Apr 1, 2026
Reviewer name: Charlene Brandt
5 out of 5 stars
5 out of 5 stars review

My neighbor and I called u outstanding customer service helped us order everything it was so easy we each paid with our credit cards. Neighbor and I got them the same day. Had them installed we absolutely love our new mailboxes got packages already highly recommend this company

Review from mailboss.com
Helpful?4QAI2O5BJGXI37989329
Oct 4, 2024
Reviewer name: G.P.
5 out of 5 stars
5 out of 5 stars review

easy to use, worked well

Instructions for required height and how to install were helpful. Dug a hole about 24" deep and put 2 bags of concrete post mix in hole and was able to mount the box the following day.

Review from mailboss.com
Helpful?4QAI2O5BJGXI37989329
Current price is $79.99
Price when purchased online
  • Free shipping
  • Free Holiday returns until Jan 31

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Sold and shipped by Epoch Design, LLC
4.888888888888889 out of 5 stars
4.9 stars out of 5, based on 27 seller reviews(4.9)
Extended holiday returns
Free Holiday returns until Jan 31

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Starting from $79.99