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

Mail Boss Black Heavy-Duty Square Mailbox Post 7121

Key item features

  • Robust Steel Construction: Built from heavy-duty galvanized 10-gauge and 14-gauge steel, providing exceptional durability and structural integrity for reliable outdoor performance.
  • Protective Powder Coating: Features a resilient powder-coated finish, specifically designed to protect against weather elements and ensure long-term aesthetic appeal and resistance.
  • USPS Compliant Installation: Designed for in-ground installation, requiring approximately 12 inches of burial to position the incoming mail slot mailbox within the USPS-specified height range of 41 to 45 inches above the roadside.
  • Reinforced Mounting Option: The post is engineered to securely fit over a 4x4 wooden post, enabling deeper installations and offering robust reinforcement when used with rebar.
  • Complete Installation Hardware: Comes equipped with four necessary mounting bolts and clear, comprehensive instructions, facilitating a straightforward and secure assembly process.
  • Product Dimensions & Color: This sturdy post measures 43 inches in height, 4 inches in width, and 4 inches in depth, presented in a practical and classic black color.
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Current price is $79.99
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  • Free 30-day returns

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Sold and shipped by KART IT
4.439446366782007 stars out of 5, based on 4339 seller reviews(4.4)
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5 out of 5 stars
stars
23 ratings22 reviews
How item rating is calculated
  1. 5 stars96% (22)
  2. 4 stars4% (1)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star0% (0)
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Showing 1-3 of 22 reviews

Mar 19, 2026
Kim
Sold and shipped byKART IT
5 out of 5 stars review

Verified Purchase

Great mailbox post!

The post worked perfectly just as you would expect. Just be sure that the post screw holes match holes in the mailbox you'll be using it with BEFORE you cement the post in.

Incentivized Review
Helpful?4QAI2O5BJGXI37989329
Apr 1, 2026
Charlene Brandt
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
Sep 15, 2023
Annette
Sold byKART IT
5 out of 5 stars review

Verified Purchase

This post is great to hold the mail box at the right height, for the postal worker to deliver your mail. Thank you

Helpful?4QAI2O5BJGXI37989329