---
product_id: 446865242
title: "12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black)"
brand: "keypak"
price: "€ 51.82"
currency: EUR
in_stock: true
reviews_count: 13
category: "Keypak"
url: https://www.desertcart.sk/products/446865242-12-inch-30-6cm-door-letterbox-fits-40-80mm-doors
store_origin: SK
region: Slovakia
---

# Adjusts to 40-80mm door thickness Internal draught excluder brush Anti-snap flap with 180° open 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black)

**Brand:** keypak
**Price:** € 51.82
**Availability:** ✅ In Stock

## Summary

> 📬 Upgrade your door game with the letterbox that fits, protects, and impresses!

## Quick Answers

- **What is this?** 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black) by keypak
- **How much does it cost?** € 51.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/446865242-12-inch-30-6cm-door-letterbox-fits-40-80mm-doors)

## Best For

- keypak enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable anti-snap flap opens a full 180° to prevent damage and ensure smooth mail access.
- • **Sleek & Discreet:** Matte black finish blends stylishly with modern door designs, elevating your curb appeal.
- • **Weatherproof Shield:** Integrated draught excluder brush and internal water seal keep your home cozy and dry.
- • **Effortless Installation:** Designed for quick, hassle-free fitting—upgrade your door in under 5 minutes.
- • **Perfect Fit, Every Time:** Telescopic sleeve adapts seamlessly to most UPVC, composite, and timber doors (40-80mm thick).

## Overview

The Keypak 12-inch door letterbox is a versatile, adjustable mail slot designed to fit doors 40-80mm thick. Featuring a robust anti-snap flap that opens 180°, an internal draught excluder brush, and a water-resistant seal, it ensures durability and weather protection. Easy to install and finished in sleek black, it’s the perfect upgrade for UPVC, composite, and timber doors.

## Description

Shop Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black). Free delivery on eligible orders of £20 or more.

Review: Looks good on the door - Perfect fit well made and very reasonably priced, changed the old one in under 3 minutes. Would definitely recommend
Review: Good quality item - Good fit and easy to install. Good quality, draught resistant

## Features

- INTERNAL DRAUGHT EXCLUDER – The integrated brushes help prevent draughts. Plus, an internal water seal prevents water leaks as it stops water getting into the door or panel.
- ANTI-SNAP FLAP – The flap opens a full 180 degree for easy access and to prevent it from snapping off when opened too far.
- ADJUSTABLE SLEEVE – The telescopic design means the letter box can be adjusted to fit doors between 40mm to 80mm in thickness. Our letter box will fit most uPVC, Composite & Timber doors.
- DIMENSIONS – The letter box overall size is 306mm x 70mm and the internal dimension of the sleeve is 254mm x 37mm. The distance between the screw hole centres is 280mm. Suitable for apertures between 285mm x 50mm up to 295m x 60mm
- EASY TO INSTALL – Please read product description below for a simple guide on how to install the letterbox.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09WF5R5PX |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 2,128 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Door Letterboxes |
| Colour | Black/Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,979) |
| Date First Available | 24 Mar. 2022 |
| Item Package Quantity | 1 |
| Item Weight | 480 g |
| Item model number | B54212-03EL |
| Manufacturer | Keypak |
| Material | Foam, Rubber |
| Number of Pieces | 1 |
| Part Number | B54212-03EL |
| Product Dimensions | 30.48 x 3.7 x 8 cm; 480 g |
| Size | 40-80mm |

## Product Details

- **Brand:** keypak
- **Colour:** Black/Black
- **Material:** Foam, Rubber
- **Maximum gap fill:** 80 Millimetres
- **Product dimensions:** 30.5L x 3.7W x 8Th centimetres

## Images

![12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black) - Image 1](https://m.media-amazon.com/images/I/31IzhQvnLJL.jpg)
![12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black) - Image 2](https://m.media-amazon.com/images/I/412RFMIK5hL.jpg)
![12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black) - Image 3](https://m.media-amazon.com/images/I/41mhaJeyjwL.jpg)
![12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black) - Image 4](https://m.media-amazon.com/images/I/41s1qtelZ5L.jpg)
![12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder Brush, Adjustable Letter Box for UPVC Composite Wood Doors (Black/Black) - Image 5](https://m.media-amazon.com/images/I/510NiexpvxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Looks good on the door
*by M***. on 12 December 2025*

Perfect fit well made and very reasonably priced, changed the old one in under 3 minutes. Would definitely recommend

### ⭐⭐⭐⭐⭐ Good quality item
*by S***S on 13 January 2026*

Good fit and easy to install. Good quality, draught resistant

### ⭐⭐⭐⭐ Great product. Easy to install
*by C***E on 2 June 2024*

I recently installed a replacement letterbox, and I am thoroughly impressed with its quality and ease of installation. The design is sleek and modern, enhancing the look of my front door. Fitting the letterbox was incredibly straightforward, taking just a few minutes with minimal tools required. The instructions were clear and easy to follow, making the process hassle-free. The letterbox is sturdy and well-made, with a durable finish that seems built to last. It operates smoothly, with a secure flap that keeps out drafts and ensures privacy. Overall, this replacement letterbox is a fantastic upgrade, combining both functionality and style. Highly recommended for anyone looking for a quick and effective door enhancement.

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**Shop now:** [https://www.desertcart.sk/products/446865242-12-inch-30-6cm-door-letterbox-fits-40-80mm-doors](https://www.desertcart.sk/products/446865242-12-inch-30-6cm-door-letterbox-fits-40-80mm-doors)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-06*