---
product_id: 17151485
title: "7121, Black In-Ground Mounting Post, 43 x 4 x 4 inches, for Use with Mailbox"
brand: "mail boss"
price: "$407"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/17151485-7121-black-in-ground-mounting-post-43-x-4-x
store_origin: NZ
region: New Zealand
---

# 43 x 4 x 4 inches 10-14 gauge steel Powder-coated finish 7121, Black In-Ground Mounting Post, 43 x 4 x 4 inches, for Use with Mailbox

**Brand:** mail boss
**Price:** $407
**Availability:** ✅ In Stock

## Summary

> 🔒 Secure Your Mail, Elevate Your Curb Appeal!

## Quick Answers

- **What is this?** 7121, Black In-Ground Mounting Post, 43 x 4 x 4 inches, for Use with Mailbox by mail boss
- **How much does it cost?** $407 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/17151485-7121-black-in-ground-mounting-post-43-x-4-x)

## Best For

- mail boss enthusiasts

## Why This Product

- Trusted mail boss brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Setup:** Includes 4 mounting bolts and clear instructions for hassle-free installation.
- • **Sturdy & Secure:** Crafted from heavy-duty electrogalvanized steel for ultimate durability.
- • **Weather-Resistant:** The sleek powder-coated finish ensures it withstands the elements.
- • **Lifetime Assurance:** Comes with a limited lifetime warranty against manufacturer defects.
- • **Versatile Installation:** Compatible with wooden posts for deep in-ground setups.

## Overview

The Mail Boss 7121 is a robust in-ground mailbox post made from heavy-gauge electrogalvanized steel, featuring a stylish powder-coated finish. Measuring 43 x 4 x 4 inches, it is designed for easy installation with included hardware and instructions, ensuring your mailbox remains secure and stylish for years to come.

## Description

Mail Boss 7121, Black In-Ground Mounting Post, 43 x 4 x 4 inches, for Use with Mailbox

## Features

- Post made of heavy-duty 10- and 14-gauge electrogalvanized steel
- Features durable powder-coated finish
- Can be used with a wooden post for deep in-ground installations
- Includes 4 mounting bolts and clear instructions
- Accepts all Mail Boss brand Locking Security Mailboxes

## 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

![7121, Black In-Ground Mounting Post, 43 x 4 x 4 inches, for Use with Mailbox - Image 1](https://m.media-amazon.com/images/I/71g+QiyxADL.jpg)

## Available Options

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

## 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.nz/products/17151485-7121-black-in-ground-mounting-post-43-x-4-x](https://www.desertcart.nz/products/17151485-7121-black-in-ground-mounting-post-43-x-4-x)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-03*