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
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
Home Secure

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

1 review
£9.99 Sold out SKU: HS3873
Order by 2pm for same-day dispatch
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Same-day dispatch on orders before 2pm

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.

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

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
Delivery & Returns

How much is delivery?

UK Mainland Delivery is £2.99 on all items no matter how many you order!

Northern Ireland, Scottish Highlands, Channel Islands £6.00.

We do not offer International Delivery (Ireland, France, Spain etc).

When will my order be dispatched?

Orders before 3pm (Monday to Friday) are usually dispatched same day but may take up to 24 hours.

When will I receive my item?

We ship on 2 working day courier. Fully Tracked. Tracking will be emailed on dispatch. 

Special order items such as keyed alike locks will take longer to dispatch. Please refer to product description for lead times. 

I haven't received my item?

Please email us your name, order number and date of purchase.

We prefer email as it allows us time to research and respond.

Returns Information

We operate a 30 day refunds and return policy. 

If you change your mind you must return the product back to us within 30 days of delivery

Please include a copy of your invoice and a note stating reason for return. 

Additional keys, locks keyed alike or built to code are non refundable as they are personalised made to order goods.

Any refund, which is due to a fault or other defect, will include a refund of the applicable delivery charges otherwise not. 

It is the buyers responsibility to arrange the return of goods to us. We do not offer a collection service for returning items. 

Items must be returned including original product packaging and accessories.

We reserve the right to refuse any returns that do not comply with this policy.

Please post returns to the following address:

Home Secure (Online)

Unit 5, Brookfield Drive

Liverpool, L9 7AJ

United Kingdom

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.