---
product_id: 527995364
title: "ARCHITECTURAL MAILBOXES Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large"
brand: "architectural mailboxes"
price: "R11653"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Architectural Mailboxes"
url: https://www.desertcart.co.za/products/527995364-architectural-mailboxes-grand-haven-plastic-mailbox-and-post-kit-black
store_origin: ZA
region: South Africa
---

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

**Brand:** architectural mailboxes
**Price:** R11653
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** ARCHITECTURAL MAILBOXES Grand Haven Plastic, Mailbox and Post Kit, Black Extra Large by architectural mailboxes
- **How much does it cost?** R11653 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/527995364-architectural-mailboxes-grand-haven-plastic-mailbox-and-post-kit-black)

## 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

- • **Sun-Safe Finish:** UV inhibitors keep your mailbox looking fresh and vibrant season after season.
- • **Built to Brave the Elements:** Durable double-walled plastic resists rust, rain, snow, and humidity flawlessly.
- • **USPS Approved for Seamless Service:** Meets all USPS T4 standards for guaranteed curbside delivery compliance.
- • **Oversized Capacity for Big Deliveries:** Roomy 2175 cubic inches fits all your packages and mail with ease.
- • **Effortless Setup with Included Hardware:** Slide-on post sleeve and clear instructions make installation a breeze.

## Overview

The Grand Haven Plastic Mailbox and Post Kit is an extra-large, USPS-approved curbside mailbox designed for the modern homeowner who demands durability and style. Crafted from rust-proof double-walled plastic with UV protection, it offers a spacious 2175 cubic inch capacity to handle everything from letters to large packages. The kit includes a matching post and all necessary hardware for quick, confident installation on a standard 4x4 wooden post. Built in the USA and engineered to withstand harsh weather, this mailbox is the reliable, polished upgrade your home’s exterior deserves.

## 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: PVC mailbox with post - 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.

## 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 |
| Best Sellers Rank | #8,372 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Post-Mount Mailboxes |
| Brand Name | ARCHITECTURAL MAILBOXES |
| Capacity | 2175 Cubic Inches |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (889) |
| Included Components | Architectural Mailboxes Grand Haven Plastic, Mailbox and Post Kit, Black |
| Item Dimensions D x W x H | 20.1"D x 16.63"W x 54.12"H |
| Item Type Name | Mailbox and Post Kit |
| Item Weight | 17.3 Pounds |
| Manufacturer | Solar Group, Inc. |
| Manufacturer Warranty Description | Warranty. |
| Material Type | Plastic |
| Mounting Type | Post Mount |
| Security Features | No additional security features |
| Style Name | Contemporary |
| UPC | 046462011499 |
| Unit Count | 1.0 Count |

## Product Details

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

## Images

![ARCHITECTURAL MAILBOXES 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!

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Beautiful replacement or new install
*by M***S on July 8, 2025*

This is a perfect replacement for your tired old mailbox, or even a fresh install. This box is larger than a normal box and will allow for slightly larger packages to be delivered instead of taken to your door. Pay attention to the instructions and double check before clicking the parts together, because it can be a slight pain to get them apart, but that's a good thing. If you already have the post in the ground and it's in good shape, this mailbox and post simply slide over the top and is secured by screws. Don't deface your new box with cheap stickers or the like, as you can order beautiful number plates or plaques to attach by adhesive or screws (via Amazon or other). Can't say how long it'll last, but it feels very sturdy and made with thick plastic. Should hold up for many years and at this price, easily replaced when the eventual time comes.

## 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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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-04-25*