---
product_id: 17151485
title: "Mail Boss In-Ground Heavy Duty Steel Mailbox Post for Mail Boss Mailboxes"
price: "S/.871"
currency: PEN
in_stock: true
reviews_count: 13
url: https://www.desertcart.pe/products/17151485-mail-boss-in-ground-heavy-duty-steel-mailbox-post-mail
store_origin: PE
region: Peru
---

# Includes 4 mounting bolts & hardware Weatherproof powder-coated finish Heavy-duty 10- & 14-gauge steel Mail Boss In-Ground Heavy Duty Steel Mailbox Post for Mail Boss Mailboxes

**Price:** S/.871
**Availability:** ✅ In Stock

## Summary

> 📬 Elevate your curb appeal with the ultimate steel mailbox post upgrade!

## Quick Answers

- **What is this?** Mail Boss In-Ground Heavy Duty Steel Mailbox Post for Mail Boss Mailboxes
- **How much does it cost?** S/.871 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/17151485-mail-boss-in-ground-heavy-duty-steel-mailbox-post-mail)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customizable Depth:** Fits over a 4x4 wooden post for deep in-ground reinforcement and added stability
- • **USPS-Compliant Height:** Designed to position your Mail Boss mailbox perfectly between 41"-45" for official mail delivery standards
- • **Weatherproof Elegance:** Durable powder-coated finish keeps your mailbox post looking sleek and new, rain or shine
- • **Effortless Installation:** Comes with clear instructions and mounting bolts for a secure, hassle-free setup
- • **Built to Last, Built to Protect:** Heavy-gauge electrogalvanized steel resists rust and warping season after season

## Overview

The Mail Boss In-Ground Heavy Duty Steel Mailbox Post is a 43-inch, powder-coated, electrogalvanized steel post designed for secure, weather-resistant mounting of Mail Boss locking mailboxes. It supports deep installations with compatibility for 4x4 wooden posts, includes all necessary hardware, and ensures USPS-compliant mailbox height, backed by a limited lifetime warranty.

## Description

Product Description The In Ground Steel Mounting Post by Mail Boss is made of heavy-duty galvanized 10- and 14-gauge galvanized steel with a durable powder-coated finish. Use this 43″ in-ground post to mount any curbside Mail Boss locking mailbox. The In Ground Post should be buried approximately 12″ in ground in order for the incoming mail slot of the Mail Boss mailboxes to be within USPS specifications of 41″-45″ above the road side surface. This post will fit securely over a treated wooden 4″x4″ post for deep installations and reinforcement with rebar stakes. From the Manufacturer The In Ground Steel Mounting Post is made of heavy-duty 10- and 14-gauge galvanized steel with a durable powder-coated finish. Use this 43" in-ground post to mount any Mail Boss locking mailbox. The post will fit over a 4"x4" wood post for deep installations and reinforcement with rebar.

Review: Easy install and goods good - Bought this for my new mailbox and it was very easy to install. My old box was cemented into the ground so I cut it low, stuck a 4x4 inside and slid this one on top. I sealed and buried the seam and now it looks like I never Jerry rigged it. Powder coat is solid and will last. It’s easy to spray clean. And it’s solid.
Review: Very good upgrade to old wooden mailbox post. - Durable, strong, well powdercoated/painted post. Easy to install, very secure, looks great, works well with mail boss mailbox. Average price.

## Features

- 44.5 inch post made of heavy-duty 10- and 14-gauge electrogalvanized steel
- Durable powder-coated finish over electrogalvanized steel stands up to weather season after season, with none of the rot or warping of a wood post
- Can be used with a wooden post for deep in-ground installations
- Includes 4 mounting bolts and clear instructions
- Mail Boss mailbox not included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mail Boss |
| Part Number | 7121 |
| Item Weight | 13 pounds |
| Product Dimensions | 43 x 4 x 4 inches |
| Country of Origin | China |
| Item model number | 7121 |
| Is Discontinued By Manufacturer | No |
| Color | Black |
| Style | In-Ground |
| Finish | Powder-Coated |
| Material | Heavy-Gauge Galvanized Powder-Coated Steel |
| Pattern | Post |
| Item Package Quantity | 1 |
| Included Components | Mailbox Post, Installation Hardware & Instructions |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Limited Lifetime Warranty Against Manufacturer Defects |

## Images

![Mail Boss In-Ground Heavy Duty Steel Mailbox Post for Mail Boss Mailboxes - Image 1](https://m.media-amazon.com/images/I/71g+QiyxADL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy install and goods good
*by J***K on August 29, 2026*

Bought this for my new mailbox and it was very easy to install. My old box was cemented into the ground so I cut it low, stuck a 4x4 inside and slid this one on top. I sealed and buried the seam and now it looks like I never Jerry rigged it. Powder coat is solid and will last. It’s easy to spray clean. And it’s solid.

### ⭐⭐⭐⭐⭐ Very good upgrade to old wooden mailbox post.
*by A***R on May 17, 2026*

Durable, strong, well powdercoated/painted post. Easy to install, very secure, looks great, works well with mail boss mailbox. Average price.

### ⭐⭐⭐⭐⭐ Looks great and sturdy!
*by A***T on August 30, 2026*

So easy to install and it looks flawless! Very happy with its durability.

## Frequently Bought Together

- Mail Boss 7121, Black In-Ground Mounting Post, 43 x 4 x 4 inches, for Use with Mailbox
- Mail Boss 7506 Mail Manager Curbside Locking Security Mailbox, Black,Large
- Mail Boss, Black 7155 Surface Mount Base Plate

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**Shop now:** [https://www.desertcart.pe/products/17151485-mail-boss-in-ground-heavy-duty-steel-mailbox-post-mail](https://www.desertcart.pe/products/17151485-mail-boss-in-ground-heavy-duty-steel-mailbox-post-mail)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-09-21*