---
product_id: 527995364
title: "Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large"
brand: "architectural mailboxes"
price: "$4495"
currency: NZD
in_stock: true
reviews_count: 13
category: "Architectural Mailboxes"
url: https://www.desertcart.nz/products/527995364-grand-haven-plastic-mailbox-and-post-kit-black-extra-large
store_origin: NZ
region: New Zealand
---

# 2175 cu in capacity UV protection for lasting color Rust-proof double-walled plastic Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large

**Brand:** architectural mailboxes
**Price:** $4495
**Availability:** ✅ In Stock

## Summary

> 📬 Upgrade your curb appeal with the mailbox that means business!

## Quick Answers

- **What is this?** Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large by architectural mailboxes
- **How much does it cost?** $4495 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/527995364-grand-haven-plastic-mailbox-and-post-kit-black-extra-large)

## Best For

- architectural mailboxes enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Setup:** Includes all hardware + step-by-step video for quick, confident installation
- • **Fade-Free Finish:** UV inhibitors keep your mailbox looking fresh season after season
- • **Room for Everything:** Extra-large 2175 cubic inches fits big packages & daily mail with ease
- • **Built to Brave the Elements:** Durable double-walled plastic resists rust, rain, snow & humidity
- • **USPS Approved & Hassle-Free:** Meets USPS T4 standards for smooth, uninterrupted mail delivery

## Overview

The Grand Haven Mailbox and Post Combo is an extra-large, USPS-approved curbside mailbox crafted from rust-proof double-walled plastic with built-in UV protection. Designed for easy installation with included hardware and video guidance, it offers 2175 cubic inches of space to securely hold large packages and daily mail. Made in the USA, it combines durability, style, and functionality for the modern homeowner.

## Description

The Grand Haven mailbox and post kit makes big mail days feel easy. Mailbox, matching post, and mounting hardware are included so you can spend less time figuring it out and more time admiring your upgraded curb. Built from durable, rust-proof plastic, this extra large mailbox can handle everything from padded envelopes to package deliveries and weekend shopping hauls. As a post mounted mailbox, it’s the perfect choice for residential mailboxes that need serious capacity without sacrificing good looks. Designed for real life and real weather, the Grand Haven is a tough outdoor mailbox that keeps your deliveries safe and dry while looking polished on your curb. USPS approved and made to the newest “T4” standard, this Next Generation curbside mailbox is the roomy, reliable upgrade your daily mail has been waiting for.

Review: Just what I needed! - I love it! The design is very pretty and well made. Easy to set up and hardware included but please do yourself a favor and build the sides and top first, then the front door and the back part last. I made the mistake of trying to put the top last and I had a hard almost impossible time taking it apart. Once the parts click in they stay! So that's not a bad thing! Definitely durable and thick material, waterproof because everything sealed perfectly. I love the size and how roomy it is. I installed a 4x4 wood piece and added cement to it, once it dried I put the post on top and it fit perfectly. I just made sure that was leveled. Installing the actual post and mailbox after the wood post dried only took a few seconds with the screws already included. I added the numbers easily (sold separately). I love the finished look!
Review: Great large mailbox! - Absolutely Love the size! Holds rather large packages. Stays dry inside. Love the look! Was easy to assemble. It has come open a couple times but could be mailman not closing it well. Great price for the quality and size! Hard plastic.

## Features

- One Purchase, Zero Guesswork: Matching mailbox with post provides a complete set for outdoor use.
- Rust-Proof, Worry-Free: Made from durable double-walled plastic, this mail box with post for outside stands up to rain, snow, & humidity without ever rusting.
- Sun-Safe Protection: Built-in UV inhibitors help maintain the mailbox’s color and finish.
- Built for Big Deliveries: This extra large mailbox with post offers oversized space for multiple large packages, plus all your other curbside mailbox deliveries.
- USPS Post Master General Approved: Mailbox is USPS approved, as required for all curbside delivery by U.S. Mail carriers - for smooth, uninterrupted service.
- Assemble with Confidence: Includes all required hardware, clear instructions, and access to an easy step-by-step video to guide you through the setup with confidence.
- Effortless Installation: Simply slide the post sleeve over a standard 4x4 wooden post and secure with included screws.
- From Our Home to Yours: Built with care—this product is designed & made in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BP2Z3DL9 |
| Access Location | Front |
| Batteries Required? | No |
| Best Sellers Rank | #10,700 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Post-Mount Mailboxes |
| Brand | ARCHITECTURAL MAILBOXES |
| Capacity | 2175 Cubic Inches |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (811) |
| Date First Available | March 1, 2023 |
| Included Components | Architectural Mailboxes Grand Haven Plastic, Mailbox and Post Kit, Black |
| Included Security Features | No additional security features |
| Item Package Quantity | 1 |
| Item Weight | 17.25 pounds |
| Item model number | GHC40BAM |
| Manufacturer | Solar Group, Inc. |
| Material | Plastic |
| Mounting Type | Post Mount |
| Part Number | GHC40BAM |
| Pattern | Solid |
| Product Dimensions | 20.1"D x 16.63"W x 54.12"H |
| Size | Extra Large |
| Style | Contemporary |
| UPC | 046462011499 |
| Warranty Description | Warranty. |

## Product Details

- **Brand:** ARCHITECTURAL MAILBOXES
- **Color:** Black
- **Included Security Features:** No additional security features
- **Material:** Plastic
- **Mounting Type:** Post Mount

## Images

![Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large - Image 1](https://m.media-amazon.com/images/I/61RDF7ne6+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed!
*by K***3 on July 23, 2025*

I love it! The design is very pretty and well made. Easy to set up and hardware included but please do yourself a favor and build the sides and top first, then the front door and the back part last. I made the mistake of trying to put the top last and I had a hard almost impossible time taking it apart. Once the parts click in they stay! So that's not a bad thing! Definitely durable and thick material, waterproof because everything sealed perfectly. I love the size and how roomy it is. I installed a 4x4 wood piece and added cement to it, once it dried I put the post on top and it fit perfectly. I just made sure that was leveled. Installing the actual post and mailbox after the wood post dried only took a few seconds with the screws already included. I added the numbers easily (sold separately). I love the finished look!

### ⭐⭐⭐⭐⭐ Great large mailbox!
*by T***A on November 30, 2025*

Absolutely Love the size! Holds rather large packages. Stays dry inside. Love the look! Was easy to assemble. It has come open a couple times but could be mailman not closing it well. Great price for the quality and size! Hard plastic.

### ⭐⭐⭐⭐⭐ PVC mailbox with post
*by M***Y on August 16, 2025*

These mailboxes were pretty easy to put together, and they were pretty easy to mount. The hardest part was taking the hole to put a 4 x 4 post into the ground and concrete that in to set the post on top. The only thing I would suggest is that if you’re going to use this mailboxthey don’t don’t provide enough support for the post itself. The plastic needs to have two or three more screws with washers going around up further on the post not just down at the bottom it’s a little wobbly otherwise otherwise it’s a really good. It’s adorable. It’s quality. It’s a large capacity and functions the way it’s supposed to a door opens very easy. They don’t don’t provide enough support for the post itself. The plastic needs to have two or three more screws with washers going around up further on the post not just down at the bottom it’s a little wobbly otherwise it’s a really good. It’s durable and great quality. It’s a large capacity and functions the way it’s supposed to door opens very easy.

## Frequently Bought Together

- ARCHITECTURAL MAILBOXES Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large
- Architectural Mailboxes APK000AM Post Anchor Kit Accessory, No Size, Pine
- 3 inch Reflective Mailbox Numbers for Outside, 5 Sets Number Stickers with Sticky Tabs for Easy Backing Peeling, Pre-cut for Effortless Align, Strong Self Adhesive Vinyl House Numbers for mailbox

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**Shop now:** [https://www.desertcart.nz/products/527995364-grand-haven-plastic-mailbox-and-post-kit-black-extra-large](https://www.desertcart.nz/products/527995364-grand-haven-plastic-mailbox-and-post-kit-black-extra-large)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-05*