---
product_id: 134924314
title: "20 x Medium Double Wall Shipping Postal Mailing Cardboard Boxes 14x10x12\""
brand: "star supplies"
price: "329 zł"
currency: PLN
in_stock: true
reviews_count: 4
url: https://www.desertcart.pl/products/134924314-20-x-medium-double-wall-shipping-postal-mailing-cardboard-boxes
store_origin: PL
region: Poland
---

# Double wall strength Heavy weight capacity Weather resistant 20 x Medium Double Wall Shipping Postal Mailing Cardboard Boxes 14x10x12"

**Brand:** star supplies
**Price:** 329 zł
**Availability:** ✅ In Stock

## Summary

> 📦 Pack it like a pro!

## Quick Answers

- **What is this?** 20 x Medium Double Wall Shipping Postal Mailing Cardboard Boxes 14x10x12" by star supplies
- **How much does it cost?** 329 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/134924314-20-x-medium-double-wall-shipping-postal-mailing-cardboard-boxes)

## Best For

- star supplies enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Usage:** Perfect for shipping heavy items or fragile goods.
- • **Shock Absorption:** Designed to protect contents from impacts during transit.
- • **Eco-Friendly Choice:** Made from recyclable cardboard, supporting sustainability.
- • **Space-Saving Design:** Flat-packed for easy storage and quick assembly when needed.
- • **Unmatched Durability:** Engineered with double wall construction for superior strength.

## Overview

These 20 medium double wall shipping boxes (14x10x12 inches) by STAR SUPPLIES are crafted from robust cardboard, designed to endure heavy weights and harsh weather conditions. Delivered flat for efficient storage, they are ideal for transporting a variety of items while providing shock absorption to keep your goods safe.

## Description

20 x Medium Double Wall Shipping Postal Mailing Cardboard Boxes 14x10x12"

## Features

- Double wall boxes are made using two layers of corrugated fluting bonded together.
- Designed to withstand heavy weights, pressures and weathers, these strong robust double wall boxes are also ideal for carrying heavy objects or items.
- Delivered flat packed these boxes take minimal storage space and can easily be made up when you require them.
- 14x10x12" Double wall cardboard boxes also aid in absorbing any shocks which may occur during transportation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | STAR SUPPLIES |
| Brand | STAR SUPPLIES |
| Colour | Brown |
| Material Type | Cardboard |
| Size | 14x10x12" |
| Manufacturer Part Number | STR-3158 |

## Images

![20 x Medium Double Wall Shipping Postal Mailing Cardboard Boxes 14x10x12" - Image 1](https://m.media-amazon.com/images/I/61ffYYvbQCS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Strong like box
  

*by A***R on Reviewed in the United Kingdom on 30 October 2023*

Very sturdy and held up well when full of very heavy books. My back is not so sturdy unfortunately.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Sturdy boxes.
  

*by D***S on Reviewed in the United Kingdom on 25 April 2019*

Great quality, sturdy boxes.  Arrived quickly.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great price for sturdy boxes
  

*by J***S on Reviewed in the United Kingdom on 15 April 2021*

Exactly what I n eeded. A  set of sturdy boxes for an excellent competitive price

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**Shop now:** [https://www.desertcart.pl/products/134924314-20-x-medium-double-wall-shipping-postal-mailing-cardboard-boxes](https://www.desertcart.pl/products/134924314-20-x-medium-double-wall-shipping-postal-mailing-cardboard-boxes)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-03*