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12 Inch All Aluminium Letterboxes

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Product Information
Fitting Instructions

The UAP Anti Vandal 300mm 12 inch all aluminium letterbox has a colour matched aluminium frame.

Each letterbox comes with both an external and internal flap to protect your home, and is available in 40-80mm depth for composite and wooden doors.

The cavity hole dimension to drill into your doors in order to fit the Framemaster 12 inch letterplate is 257mm x 39.75mm.

Letterbox Features:

2 Outward facing brushes create the Anti-Vandal feature as it prevents vandals from placing unwanted items into the cavity
3 Outwards facing brushes also means better draught proofing and makes it easier to post letters through
4 180 degree opening flap means the flap will not snap off when opened too far
5 Made from aluminium with a 10 year colour fast guarantee against colour fading in the sun
6 Blind bolts to the exterior of the letterplate prevents the outer frame being unscrewed from the door externally
7 An internal water seal prevents water getting into the door or panel, and stops letters getting wet
8 Ultra-flexible springs can withstand the letterbox flap opening thousands of times without breaking
9 Revolutionary Patent pending self-aligning screw boss makes screwing the inner and outer frames together easy
10 Comes in 40-80mm sleeve thicknes for wooden and composite doors
11 Conforms to many standards and testing requirements including BS EN 1303:2005
12 Up to a 5 year inland coating guarantee (defined as 25 miles from the coast or 5 miles from a highly populated industrial area)

Technical Information

Distance between screw holes 272mm
Letterbox length 300mm
Letterbox height 76mm
Frame material Aluminium
Cavity hole size 257mm x 39.75mm

Materials Used For Flap For Each Finish

Gold Anodised Aluminium
Silver Anodised Aluminium
Polished Silver Aluminium
Mid Gold Aluminium
Black Aluminium
White Aluminium

Anti-Vandal Feature

Each year house fires are started by vandals putting fireworks through letterboxes

Each Anti-Vandal™ letterplate has the brushes outward facing (a feature no other letterplate in the industry has). This gives you 3 great benefits:

• Having brushes on the front of the door acts as a visual deterrant to vandals. As the internal cavity is not easily accessible, it makes it alot harder to put lit fireworks etc. into the cavity

• It is easier for postmen to navigate letters through the brushes, so you won't end up receiving crinkled letters anymore.

• The brushes stop draughts at the point of entry, making the letterplate draught-proof.

Anti-Snap Feature

Make your letterbox flaps snapping off a thing of the past

Each letterbox flap can open to 180 degrees, meaning that it should not snap off. Many letterboxes in the industry can only open to 90 degrees, so when too much force is applied when lifting the flap up, it causes them to snap off.

Ultra-flexible springs means that they can withstand thousands of openings without breaking, making them last even longer.

An internal water seal also prevents water getting in to the door panel, which stops letters getting wet as they are posted through, and also helps to prevent the flaps from pitting and rusting.

Live Near The Coast?

Products pitting and rusting near the coast is a very common problem due to the salt in the air

If you live near the coast (defined as within 25 miles away) or within 5 miles of a heavily populated industrial area, it is a very common problem for door hardware to pit and rust (usually within 6 months of it being fitted). The high concentration of salt and chemicals in the air corrodes most metals including brass, zinc, zamak, nickel and more.

UAP have developed a range of products developed specifically for the coast - called Nanocoast. These products are made from 316 grade stainless steel, and have been salt spray tested to ASTM B117:2005 for 2000+ hours (the industry standard is 480 hours).

UAP are so confident with the quality of their Nanocoast products that they offer a LIFETIME coating guarantee, meaning that they will not pit or rust no matter where you put them in the country! 

If you require a Nanocoast letterbox, please click here

Fitting Instructions

Fitting Your Letterbox

Fitting your new letterbox is easy and in most cases only requires a screwdriver. The letterbox has 2 parts – the exterior part with brushes and the interior part. We have also supplied fixing screws.

1. Take out your existing letterbox by removing the screws on the inside of the door. The letterbox will then slide out, leaving a cavity in the door.

2. Take the interior part and see if it will fit through the existing hole in the door*. If it does then lift the flap and push the interior part through the door and hold it with one hand. With the door open, slide the exterior part into the door cavity and it will slot into the interior part.

3. Line up the two parts of the letterbox perfectly and then use the 2 screws supplied to secure the interior part. Use a screwdriver to tighten it up but do not use power tools to tighten up the screws.

*If the letterbox does not fit through the cavity, then depending on the door material, open the cavity slightly using a saw, sander or Stanley knife.

Cleaning Your Letterbox

Every month, wipe the letterbox over with a moist cloth and remove any dust particles that may have accumulated. Finish off by wiping the letterbox with a lint free cloth.


Letterbox Guarantee

UAP Limited distribute a range of letterplates in a variety of colours and finishes, and in a number of base materials i.e. aluminium, brass, zamak and stainless steel. As they have no control over the aperture that is cut to take the letterplate, and because the consistency of the door/window/panel thickness is not guaranteed to be perfectly uniform, they strongly recommend using a bead of silicone on the rear of the external letterplate half to go all way round the aperture to give extra support to the water seal. Because of the imperfections in the products being fixed to, especially door panels, the only way to guarantee a good water seal is to apply a silicone bead.

We guarantee the door knocker and finish against the following;

Surface Coating

We guarantee that the letterboxes have a 5 year inland coating guarantee (defined as 25 miles from the coast or 5 miles from a highly populated industrial area) subject to;

1. The letterboxes are applied to a door, window frame or door.

2. The letterboxes are fixed correctly with the brushes facing to the outside and are not scratched or damaged at any time during the installation process or thereafter.

3. The letterboxes are cleaned monthly with a moist cloth and not with any form of cleaning agents.

4. No claim will be accepted for any letterbox that is scratched or mutilated or fitted incorrectly.


We guarantee that the letterboxes will not fail mechanically in normal use during the 5 year guarantee period subject to the conditions outlined above.

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