---
product_id: 666206171
title: "Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White)"
brand: "keypak"
price: "€ 68.60"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/666206171-keypak-12-inch-30-6cm-door-letterbox-fits-40-80mm
store_origin: HR
region: Croatia
---

# Adjustable fit 40-80mm doors Internal draught excluder & water seal Anti-snap flap 180° open Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White)

**Brand:** keypak
**Price:** € 68.60
**Availability:** ✅ In Stock

## Summary

> 🚪 Upgrade your door’s first impression with sleek security and smart design!

## Quick Answers

- **What is this?** Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White) by keypak
- **How much does it cost?** € 68.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/666206171-keypak-12-inch-30-6cm-door-letterbox-fits-40-80mm)

## 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

- • **Durability Meets Design:** Anti-snap flap opens a full 180°, engineered to prevent breakage and provide effortless mail access without compromise.
- • **Perfect Fit, Every Time:** Telescopic sleeve adapts seamlessly to door thickness from 40mm to 80mm, ensuring a flawless installation on UPVC, composite, or timber doors.
- • **Weatherproof Your Entry:** Integrated brush strip and internal water seal block cold drafts and water ingress, keeping your home cozy and dry year-round.
- • **DIY Friendly Installation:** Clear step-by-step fitting guide and adjustable bolts make upgrading your door’s letterbox a quick, satisfying project.
- • **Silent & Smooth Operation:** Sound-dampening bumpers reduce flap slamming, delivering a quiet, premium user experience that complements your modern lifestyle.

## Overview

The Keypak 12-inch Door Letterbox is a versatile, adjustable mail slot designed for doors 40-80mm thick. Featuring an anti-snap flap that opens 180° for easy access, an internal draught excluder with brush strip, and a water-resistant seal, it ensures durability, weather protection, and quiet operation. Suitable for UPVC, composite, and timber doors, it’s a practical yet stylish upgrade that combines security with convenience.

## Description

The 12-inch Telescopic Post Port Letterplate with adjustable telescopic sleeves fits doors 40 to 80mm.  The letterplate includes an insulating brush strip that reduces cold & draughts and the flap opens to 180° for easy posting.  It’s fitted with sound dampening bumpers to prevent slamming.   Fitting Instructions  1) Cut door aperture 285mm X 50mm 2) Separate the two letterplate halves and place the exterior gasket over metal fixing posts. 3) Take the half that contains brushes and insert into the aperture from the inside of the door. 4) Take the exterior half (with gasket) and slide into the letterplate tube from the outside of the door. 5) Before fixing. Take time to ensure the letterplate fully covers the aperture on both sides and that the exterior gasket does not protrude. 6) Use either the 2 short OR 2 long bolts (depending on your door thickness) and screw into centre hole at either end of the letterplate, ensuring that you DO NOT TO OVER TIGHTEN fixings.   Care of Finishes: Regular cleaning, using warm soapy water and a non-abrasive cloth should be sufficient to keep any finish in its original condition for a long period. For Anodised finishes, an occasional wipe over with a damped cloth containing a good light oil or lanolin is recommended.

## 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 |
|---------------|-------|
| Manufacturer | Keypak |
| Part number | B54212-02EL |
| Item Weight | 500 g |
| Product Dimensions | 30.48 x 3.7 x 4 cm; 500 g |
| Item model number | B54212-02EL |
| Size | 40-80mm |
| Color | Black/White |
| Material | Polyurethane |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Colour:** Black/White
- **Material:** Polyurethane
- **Brand:** Keypak
- **Product dimensions:** 30.5L x 3.7W x 4Th centimeters
- **Maximum gap fill:** 80 Millimeters

## Images

![Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White) - Image 1](https://m.media-amazon.com/images/I/61nyK1qo4qL.jpg)
![Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White) - Image 2](https://m.media-amazon.com/images/I/716qK0n6BaL.jpg)
![Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White) - Image 3](https://m.media-amazon.com/images/I/61bL2RC0BpL.jpg)
![Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White) - Image 4](https://m.media-amazon.com/images/I/71WWhaYFeWL.jpg)
![Keypak 12 inch (30.6cm) Door Letterbox - Fits 40-80mm Doors, Anti-Snap Flap, Internal Draught Excluder, Adjustable Letter Box for UPVC Composite Wood Doors (Black/White) - Image 5](https://m.media-amazon.com/images/I/715oyBk-xyL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.hr/products/666206171-keypak-12-inch-30-6cm-door-letterbox-fits-40-80mm](https://www.desertcart.hr/products/666206171-keypak-12-inch-30-6cm-door-letterbox-fits-40-80mm)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-06*