---
product_id: 51191143
title: "Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White)"
brand: "welseal"
price: "KSh1814"
currency: KES
in_stock: false
reviews_count: 8
url: https://www.desertcart.co.ke/products/51191143-welseal-12-inch-upvc-letterbox-letter-plate-panel-for-20mm
store_origin: KE
region: Kenya
---

# 12-inch size Secure fixing Draught protection Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White)

**Brand:** welseal
**Price:** KSh1814
**Availability:** ❌ Out of Stock

## Summary

> 📬 Seal the Deal with Style!

## Quick Answers

- **What is this?** Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White) by welseal
- **How much does it cost?** KSh1814 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/51191143-welseal-12-inch-upvc-letterbox-letter-plate-panel-for-20mm)

## Best For

- welseal enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Fit:** Perfect for doors ranging from 20mm to 40mm thick.
- • **Durable & Reliable:** Crafted from high-quality UPVC for long-lasting performance.
- • **Sleek Modern Design:** Elevate your entryway with a contemporary touch.
- • **Effortless Installation:** Securely fix from the inside with just two screws.
- • **Ultimate Draught Exclusion:** Stay cozy with advanced twin nylon brush seals.

## Overview

The Welseal 12 Inch UPVC Letterbox is designed for modern doors, featuring internal brush seals for superior draught protection and a sleek aesthetic. It fits doors between 20mm and 40mm thick and is easy to install with secure internal fixing.

## Description

Sleeves for depths: Panel fitting: 20 - 40 mm - suitable for a door thickness of 18 - 38 mm. fitting: 40 - 80 mm - suitable for a door thickness of 38 - 78 mm. Please see image second and third to check your measurement for which size letter box you require. A rounded ergonomic design with internal and external spring loaded flaps, they also incorporate a brush seal for draught improvement. A range of colour finishes is available and all are supplied with a black surround for improved UV stability. Finishing is either by powder coated paint in the case of white or anodising for all other colours except chrome (plated). Polished silver is an anodised but polished finish similar to polished chrome.

## Features

- Modern design with sprung internal and external flaps
- Internal brush seals for improved draught exclusion
- Draught protection provided internally by twin nylon brush seals
- Secure fixing from inside by two screws

## Images

![Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White) - Image 1](https://m.media-amazon.com/images/I/51qWtgQMf8L.jpg)
![Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White) - Image 2](https://m.media-amazon.com/images/I/51+3-PUGoHL.jpg)
![Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White) - Image 3](https://m.media-amazon.com/images/I/5193rlnnYdL.jpg)
![Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White) - Image 4](https://m.media-amazon.com/images/I/61FGYbSfMIL.jpg)
![Welseal 12 Inch UPVC Letterbox/ Letter Plate Panel for 20mm-40mm Thick Doors (White) - Image 5](https://m.media-amazon.com/images/I/61FHclBd14L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great Product at a Great Price
  

*by S***C on Reviewed in the United Kingdom on 15 February 2021*

The product was fairly easy to install on my own, with the use of tape to hold the outer part in place, without tape it was quite difficult to line up the screw holes and impossible to reach around the door frame to hold it, so I reached through the letterbox from the inside to steady it as I tightened the screws. This product is nice and sturdy once tightly screwed in place. I think it looks far better in the white finish, compared to my previous ‘gold’ version. It came very well-packaged in shrink-wrap and cardboard. Some previous reviewers have mentioned the screws being too long/unsuitable (wood screws) and I would agree with this observation, but I just used the two screws that were holding my old letterbox together and they worked perfectly. I also did not have any problems (like some other reviewers mention) with the colour. The item I received was perfectly white, not cream as some reviewers pictures show. I am also very happy that the visible surround is white too. The hidden inner parts are black. I would definitely recommend this item and I am very happy with my purchase and the price paid.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Decent value for money I'd say.
  

*by A***H on Reviewed in the United Kingdom on 9 January 2017*

Good for the price considering I was looking at basically the same product in Wickes that was twice the price. Took me 5 mins to fit and fitted the door fine. The screws that came with it were a little too long for the thickness of my door so I dug some screws out of a box in the garage that were just a tad smaller in length. Overall, it is what it is. Not sure how long the flaps will last but for just under a tenner I'm not going to complain. It's stopped the draft coming through that I had because one flap had fell off.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Love it
  

*by M***N on Reviewed in the United Kingdom on 24 April 2018*

The letterbox came shrunk wrapped with two screws inside. My door is 1" thick and I've had problems in the past getting one to fit without additional bother.My previous B&Q letterbox required me to take a hacksaw to trim back the inner sleeve creating quite a mess.This letterbox didn't require any trimming, it fitted my 1" thick door perfectly.The screws screw into a plastic column which I suspect may make this a 'get it right first time' set up.The only difficulty I had was getting the screws tight enough. I would have been happier with another turn on the right hand screw but it is sufficient as it stands now.What I especially like is the ease that my postman seems able to put letters through and the general silence of its operation.I did adjustments for a previous letterbox unfortunately I removed a small 1mm x 2mm gap too much on one side. The outer edge of this letterbox seems slightly larger so hids my old blunder rather nicely.Generally for a tenner I'm very happy. I live close to the sea which may explain why the paint flaked off my old letterbox. Time will tell how this one fares but I'm hopeful and would definitely buy another one as it's only a tenner and easy to fit.

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**Shop now:** [https://www.desertcart.co.ke/products/51191143-welseal-12-inch-upvc-letterbox-letter-plate-panel-for-20mm](https://www.desertcart.co.ke/products/51191143-welseal-12-inch-upvc-letterbox-letter-plate-panel-for-20mm)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-21*