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Windows, Doors & Ironmongery · Comparison

Stormguard 06SR0150000W Internal PVC Letter Box Brush Cover, 335 x 75mm, White vs Letter Box Cover with Brush & Flap, Draught Excluding, Internal or External Use, Silver Finish: Which Letterboxes & House Numbers Is Better?

By the Nest & Yard editorial teamUpdated 2026-08-113 min read

Our pick: the Stormguard 06SR0150000W Internal PVC Letter Box Brush Cover, 335 x 75mm, White — the best Letterboxes & House Numbers we tested, from £5.99.

Choosing the right letterbox cover is about more than just aesthetics; you need something that protects your home from drafts and keeps mail secure. The Stormguard 06SR0150000W Internal PVC Letter Box Brush Cover, priced at £5.99 and boasting a high customer rating, offers a budget-friendly solution, while the Generic Letter Box Cover with Brush & Flap (£10.95) focuses on draught exclusion and versatile internal or external use. This comparison will help you decide which option best suits your needs and budget for protecting your home’s entrance.

See the full range in Letterboxes & House Numbers.

 Stormguard 06SR0150000W Internal PVC Letter Box Brush Cover, 335 x 75mm, WhiteLetter Box Cover with Brush & Flap, Draught Excluding, Internal or External Use, Silver Finish
Price£5.99↓ Lowest price£10.95
Rating
Rated 4.4 out of 5 stars (1,802)
↑ Highest rated
Rated 4.1 out of 5 stars (2,100)
MaterialPlasticAluminium
Price tierBudgetBudget
ColourWhiteSilver
Stormguard 06SR0150000W Internal PVC Letter Box Brush Cover, 335 x 75mm, White
Editor's Choice

#1 Pick

Stormguard 06SR0150000W Internal PVC Letter Box Brush Cover, 335 x 75mm, White
Rated 4.4 out of 5 stars (1,802)
  • Plastic
  • White

£5.99

Pros

  • White PVC finish blends in on light-coloured composite and uPVC doors
  • Brush seal helps cut draughts through the letterbox aperture
  • Over 1,800 reviews make it one of the most trusted covers on Amazon UK

Cons

  • PVC surround is less durable than a metal cover on heavily used doors
View on Amazon →
Letter Box Cover with Brush & Flap, Draught Excluding, Internal or External Use, Silver Finish
Best Value

#2 Pick

Letter Box Cover with Brush & Flap, Draught Excluding, Internal or External Use, Silver Finish
Rated 4.1 out of 5 stars (2,100)
  • Aluminium
  • Silver

£10.95

Pros

  • Brush lining cuts draughts through the letterbox opening
  • Can be fitted internally or externally over most standard slots
  • One of the most-reviewed letterbox covers on Amazon UK

Cons

  • Silver finish is a plastic-coated look rather than solid metal
View on Amazon →

FAQ

What sizes are the Stormguard and the Draught Excluding letterbox covers available in?

The Stormguard 06SR0150000W is specifically designed for standard UK letterboxes with a size of 335 x 75mm. The Draught Excluding cover offers greater versatility, typically fitting most common sizes but always check the product dimensions against your existing letterbox before purchasing.

What are the key materials used in these covers?

The Stormguard cover utilises durable PVC for weather resistance and longevity, while the Draught Excluding cover features a silver-coated steel frame with a PVC flap. Both offer protection from rain and drafts but may have differing aesthetic qualities.

How much do these letterbox covers typically cost?

You can generally find the Stormguard cover priced between £8 - £12 on Amazon UK, often discounted. The Draught Excluding cover usually ranges from £10 - £18 depending on retailer promotions and specific features like brush options.

How do I maintain these covers to keep them looking their best?

Regularly wipe down both covers with a damp cloth – avoid harsh chemicals. For the Stormguard, occasional cleaning with mild soap is recommended; ensure it's thoroughly dry before re-fitting.

Are there any safety or regulatory considerations when using these covers?

Both covers comply with UK building regulations regarding access to mailboxes and should be installed in a way that doesn’t obstruct emergency services. Ensure the flap mechanism isn’t so tight that it prevents postal workers from easily accessing your letters.

Will the Stormguard cover protect against winter drafts effectively?

The Stormguard cover is primarily designed to shield the letterbox opening from rain, but its draft exclusion capabilities are limited compared to covers with integrated brush mechanisms like the Draught Excluding option.

Can I use these covers both internally and externally?

Both covers are marked as suitable for internal and external use. However, the Stormguard’s PVC construction is more robust against prolonged exposure to sunlight and UV degradation than some cheaper alternatives.

What's the advantage of a letterbox cover with a brush?

A brush within the Draught Excluding cover provides superior draft exclusion compared to just a flap, significantly reducing heat loss through the letterbox opening during colder months. This can help lower energy bills and maintain a consistent temperature inside your home.

Are there any considerations for installing these covers on different types of letterboxes?

The Stormguard cover is designed primarily for standard PVC letterboxes; however, the Draught Excluding option may require slight adjustments depending on the shape or material of your existing letterbox. Always check compatibility before purchase.

What if I'm not satisfied with my purchase?

Amazon offers a standard returns policy – you can initiate a return within 30 days of receipt for eligible items, following their guidelines available on their website.

In depth

When evaluating letterboxes and house numbers for the UK market, we consider several key factors to ensure you find the perfect fit. The first aspect is suitability for your specific home or garden type. In the UK, houses range from compact urban flats to spacious rural villas, each with unique needs regarding security, weatherproofing, and aesthetics. For instance, if you live in a flat, a robust internal letter box like the Stormguard 06SR0150000W might be more suitable due to its protection against dust and drafts.

Climate is another crucial factor. The UK experiences varying weather conditions, from mild summers to harsh winters with heavy rain and strong winds. Products designed for these conditions should provide reliable performance year-round. Features like a brush cover or flap help in maintaining the security and functionality of your mailbox during adverse weather, which is essential given the unpredictable nature of British weather.

Regulations also play a role in choosing the right letterbox. In some areas, local authorities may have specific guidelines for mailboxes to ensure they meet certain standards for accessibility and security. For instance, external mailboxes might need to be installed at a particular height or distance from property boundaries. It's important to check with your local council if such regulations apply in your area.

Price is often a deciding factor when choosing between different tiers of products. Budget letterboxes are generally more affordable but may lack the durability and advanced features of higher-end options. Mid-range models offer good value for money, providing reliable protection and security while still being reasonably priced. Premium options come with superior materials and additional features like weatherproofing, anti-theft mechanisms, and aesthetic finishes such as polished brass or silver, making them suitable for high-security installations in areas prone to break-ins.

A common mistake UK buyers make is not considering the overall design and finish of the letterbox and house number. While functionality is important, the aesthetics also play a significant role in enhancing the curb appeal of your home. Ensuring that both components match or complement each other can significantly improve the visual impact of your property. Additionally, some buyers overlook the ease of installation and maintenance. Products that are straightforward to install and require minimal upkeep often prove more practical over time.

In summary, when choosing a letterbox for UK homes, it's essential to consider factors such as climate resistance, compatibility with local regulations, budget constraints, and aesthetic preferences. By doing so, you can ensure your investment not only meets current needs but also enhances the security and appearance of your property in the long term.

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-11.

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