The image shows a white visor guard for letterboxes, with a depiction of how it is used to prevent 'letterbox fishing'. A person is shown in the inset image trying to fish a key out of a letterbox.
Features and benefits graphic for a white mail slot draught excluder. Highlights include prevention of letterbox fishing, white finish, size of 340mm wide by 70mm high, easy installation by screwing onto the inside of the door, and screws supplied
Informational graphic explaining the problem of letterbox key fishing. It describes how burglars use tools like hooks or rods to retrieve keys through mail slots
White mail slot draught excluder with a labeled width of 325mm. The top view shows the product against a white background with measurement arrows, while the bottom image shows it installed above a mail slot on a door
White triangular mail slot draught excluder shown from front and rear angles. The rear view displays a keyhole mounting slot and screw hole for installation. Four self-tapping screws for uPVC doors are included below the product
White front door with an open mail slot cover, revealing a wooden draft blocker or brush insert inside. The slot is positioned below a decorative glass window with metal framing
Close-up of a white front door with a rectangular mail slot cover installed beneath a decorative glass panel. The mail slot flap is angled outward, matching the door's white color and clean design
Roll over image to zoom in Click on image to zoom
The image shows a white visor guard for letterboxes, with a depiction of how it is used to prevent 'letterbox fishing'. A person is shown in the inset image trying to fish a key out of a letterbox.Features and benefits graphic for a white mail slot draught excluder. Highlights include prevention of letterbox fishing, white finish, size of 340mm wide by 70mm high, easy installation by screwing onto the inside of the door, and screws suppliedInformational graphic explaining the problem of letterbox key fishing. It describes how burglars use tools like hooks or rods to retrieve keys through mail slotsWhite mail slot draught excluder with a labeled width of 325mm. The top view shows the product against a white background with measurement arrows, while the bottom image shows it installed above a mail slot on a doorWhite triangular mail slot draught excluder shown from front and rear angles. The rear view displays a keyhole mounting slot and screw hole for installation. Four self-tapping screws for uPVC doors are included below the productWhite front door with an open mail slot cover, revealing a wooden draft blocker or brush insert inside. The slot is positioned below a decorative glass window with metal framingClose-up of a white front door with a rectangular mail slot cover installed beneath a decorative glass panel. The mail slot flap is angled outward, matching the door's white color and clean design

Letterbox Cowl Visor Guard Extra Security Cover - White – uPVC & Composite Doors

Home SecureSKU: HS3873
Price:
£9.99

Key benefits

  • Stops fishing-style attacks - blocks objects pushed through
  • Internal fit, easy retrofit - screws supplied
  • White finish - discreet on most uPVC doors

100% SECURE PAYMENTS

HASSLE FREE RETURNS

FULLY TRACKED DELIVERY

Description

A visor guard will protect you against the latest trend of criminals to try and "fish" house and car keys left near your door, by using hooks on a line that go through your letter box.

Young arms that can fit through the letterbox are sometimes able to unlock a nightlatch. 

Thieves also try and evaluate the assets you have through your letterbox identifying valuable targets and making it more tempting to break in.

  • Prevents ‘letterbox fishing’
  • White Finish
  • Overall Size: 340mm (w) x 70mm (h)
  • Easy to fit simply screw onto inside of door
  • Self-tapping Screw for uPVC doors supplied

Payment & Security

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Frequently Asked Questions

A letterbox cowl visor guard is designed to provide additional protection around your external letterbox. It helps shield your property from rain, draughts, and potential tampering whilst improving the overall security and durability of your door.

A letterbox cowl adds an extra layer of protection by helping to reduce access through the letterbox opening. It can also help deter unwanted interference and provide better coverage around the letter plate area. Learn more in our blog: Letterbox Cowl vs Traditional Flap – Which Offers Better Protection?

This letterbox visor guard is suitable for many uPVC, composite, and wooden doors. Before purchasing, it is recommended to check the dimensions of your existing letterbox to ensure compatibility.

Yes, most letterbox cowl visor guards are designed for straightforward DIY installation using basic tools and can usually be fitted without professional assistance.

Installing a letterbox cowl can help improve weather protection, reduce draughts, enhance door security, and protect your letterbox area from daily wear and tear.

About the Brand - Home Secure

HomeSecure is a UK-based home security specialist dedicated to providing high-quality, reliable, and affordable security products designed to protect homes and families. With years of industry experience, HomeSecure focuses on delivering hardware that meets the practical needs of homeowners while maintaining professional-grade performance.

From anti-snap door cylinders and precision-engineered hardware to reinforcement solutions and security accessories, every HomeSecure product is developed with durability, ease of installation, and long-term protection in mind. Our range is carefully tested and selected to meet trusted security standards—offering strong defence against common break-in methods and everyday wear.

At HomeSecure, we put customer safety, product reliability, and excellent value at the core of everything we do. Whether you're upgrading a lock, improving door strength, or enhancing overall home protection, HomeSecure products deliver dependable security you can trust.

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