Best Letterboxes & House Numbers — Aluminium (2026)
3 letterboxes & house numbers matching material “Aluminium”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Letterboxes & House Numbers UK (2026) guide.
Our range of aluminium letterboxes and house numbers offers a premium solution for enhancing your property’s appearance with durable, weather-resistant materials. Crafted from high-quality aluminium, these products are designed to withstand the elements, resisting corrosion and ensuring long-lasting performance – ideal for both traditional and modern homes.
Aluminium's inherent strength and lightweight nature make it a superior choice compared to traditional cast iron or plastic options. The smooth, contemporary finish of our aluminium letterboxes and house numbers complements various architectural styles, adding a touch of elegance and sophistication to your facade. They are available in a range of finishes including polished silver, bronze and black.
These letterboxes and house numbers are designed for straightforward installation and are compatible with standard post hole sizes. Please note that whilst we offer a comprehensive selection, specific dimensions and styles may vary. Always check the product details for full specifications before ordering to guarantee suitability for your project.
#1 Pick
Letter Box Cover with Brush & Flap, Draught Excluding, Internal or External Use, Silver Finish- Aluminium
- Silver
£9.99
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
#2 Pick
K Smart Sign Exalted Composite Aluminium Floating House Sign Plaque Number, 200mm x 130mm, Anthracite Grey- Aluminium
- Anthracite Grey
£8.49
Pros
- Floating fixings give a modern raised-off-the-wall look
- Composite aluminium panel resists fading and corrosion outdoors
- Very well reviewed, popular budget house sign choice
Cons
- Fixed anthracite colourway will not suit every house facade
#3 Pick
Keypak 12 Inch Adjustable Letter Box, Anti-Snap Flap, Draught Excluder, Black- Aluminium
- Black
£16.84
Pros
- Adjustable sleeve fits door thicknesses from 40-80mm
- Anti-snap flap adds a layer of extra security over a basic flap
- Built-in draught excluder cuts cold air through the slot
Cons
- Black finish will not suit white or light-coloured composite doors
FAQ
What finishes are available for the aluminium letterboxes?+
We currently stock these in polished silver, bronze, and black. The finish is anodised to provide excellent resistance to weathering and fading.
How deep do the letterbox posts need to be?+
The minimum post depth required is 600mm for stable installation, especially in areas with frost or strong winds. Check specific product details for recommended depths.
Are the house numbers easily changeable?+
Yes, our aluminium house numbers are designed for easy replacement. They typically utilise a simple screw fixing system and can be swapped out quickly without needing specialist tools.
Do I need to treat the aluminium to protect it from the weather?+
Aluminium is naturally corrosion-resistant, but we recommend occasionally cleaning with a damp cloth and mild soapy water to maintain its shine. Avoid harsh chemicals.
What size are the house numbers typically?+
Our house number range includes sizes from 75mm up to 150mm in height, allowing you to choose the perfect fit for your property’s dimensions.
Can these letterboxes and numbers be used outdoors year-round?+
Absolutely. The aluminium construction is specifically designed for outdoor use and offers excellent weather resistance, suitable for all climates – though regular cleaning is recommended.
What tools do I need to install the letterboxes?+
You’ll generally need a post hole digger or shovel, a screwdriver (usually Phillips head), and potentially a rubber mallet for gentle adjustments. Specific tool requirements may vary by product.
Are these letterboxes suitable for installation in areas with heavy rainfall?+
Yes, the aluminium construction is designed to resist water ingress and prevent rust formation, making them suitable for even areas with high levels of rainfall – ensuring longevity.
What guarantees do you offer on the aluminium materials?+
The manufacturer provides a standard warranty against defects in material and workmanship. Please refer to Amazon's terms and conditions for details on returns eligibility.
Can I customise the house number font or size?+
Currently, we only offer standard fonts and sizes within our range. However, you can select from a variety of styles based on your preference.