Top 6 12 Inch Slimline Letterbox UK – Door Letterboxes

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1. Paddock

12" Slimline Letterbox in GOLD

Paddock - Fits door thickness 40 – 80mm. Easy to fit. Internally provided draught exclusion. Internal measurement: 268mm x 38mm. Letterbox frame size: 315mm x 50mm.
Part Number12-LB-SLIM-Gold

2. Paddock

12" Slimline SlimMaster Metal Frame Letterbox 36/70 in WHITE

Paddock - Letterbox frame size: 317mm x 50mm. Distance between screw holes - 292 millimetres. Fits door thickness 36 – 70mm. The letterbox is weather sealed with a closed cell foam gasket pad. Internal measurement: 269mm x 38mm.
Height5 cm (1.97 Inches)
Length31.7 cm (12.48 Inches)
Width6.3 cm (2.48 Inches)
Part Number110352

3. UAP

Matt Finished Plastic Frame Mirror Polished, Anti Burglar, Anti Snap Flap, Secure Letter Box, for 40-80mm Wooden and Composite Doors, Anti Vandal, UAP 12 Inch Slimline Door Letterbox

UAP - Even better, ensuring the letterbox lasts. Choice of colours: an impressive range of finishes means you can choose the right colour to suit your home. Designed to deter such behaviour, this trademarked design gives you peace of mind.

Durable opening: opening an impressive 180-degrees, you can rely on this stylish letter plate to last. Draught excluding letter catchers: brushes inside the letterbox do more than make it easier to post letters - they act as an internal letterbox draught excluder, keeping your home safe from unwanted chills through winter. Choose gold, mirror Polished, or go simple with Black or White. Unique anti-vandal design: keep your door letterbox safe from unwanted items - including dangerous fireworks all too often posted by vandals - with our unique outward-facing brushes.

Strong water seal: complete with a lasting water seal, it will prevent any rusting or pitting of your product, this innovative letterbox flap will stop your important letters from getting damp through winter. Ultra-flexible springs mean you can open your letterbox again and again with no fear of snapping or breaking.

4. UAP

Premium Secure Letter Box, Anti Burglar, Anti Scratch, for Wood or uPVC Doors Mirror Polished 40-80mm, Anti Vandal, Anti Snap Flap, UAP 12 Inch Framemaster Door Letterbox

UAP - The water resistance also prevents rusting and pitting in the letterbox flaps. You can choose from various colours, black, including gold anodised, white and polished silver. The letterbox flap also features ultra-flexible springs that can withstand countless openings in the long haul without breaking.

Easy to use: the framemaster letterbox catcher is the ideal mailbox for any home as the outward-facing brushes make navigating letters through the letterbox flap easier. Highly durable: the letter plate is made with a hardwearing material that opens to 180 degrees, meaning it won’t snap. So, crinkled letters become a thing of the past. Protects letters: featuring an internal water seal, the Framemaster letter boxes for doors prevent water from getting into the panel or door, ensuring your letters don’t get soggy or wet.

Outstanding features: unlike standard letterboxes, the 12-inch Framemaster letterbox has numerous outstanding elements like the trademarked Anti-Vandal facility for preventing fires in your home. The outward-facing brushes act as a visual deterrent to vandals. Versatile: this 12-inch letterbox comes in two sleeve thicknesses – 40-80mm for composite and wooden doors and 20-40 mm for uPVC doors, making it the perfect addition to any home.

5. HomeSecure

UPVC Letterbox 12" Letter Box Anodised Gold Letterplate Panel 20mm-40mm Door Depth

HomeSecure - Anti-scratch Frame. Anti-Burglar. The only letterbox design to be awarded the 'Secured By Design' status. Anti-snap Flap. Anti-Vandal.
ManufacturerHome Secure
Part Number9691565

6. UAP

Anti Vandal, Anti Burglar, UAP 12 Inch All Aluminium Door Letterbox, Premium Secure Letter Box, Anti Snap Flap, for 40-80mm Composite and Wooden Doors Polished Silver

UAP - Durable: made with high-grade material, this all-metal letterbox catcher can withstand the wear and tear caused by heavy and daily use. Versatility: the all aluminium 12-inch letter box is available in a wide range of colours, including mid gold, white, gold anodised and silver anodised.

Highly functional: unlike standard letterboxes that break off after numerous openings, the aluminium letter plate has ultra-flexible springs that can stand thousands of openings without snapping, making it an excellent choice for everyday mailbox use. The letter catcher can be installed on composite and wooden doors of 40-80mm thickness. Safe and secure: made from aluminium, the letterbox flap and letterbox cover act as a visual deterrent to vandals, and their size makes it impossible for criminals to put their hands through your post box to steal.

This prevents fires. Its letterbox flap opens to 180 degrees, meaning it won’t snap off when the postman opens it too far. The outward-facing brushes don’t crinkle letters by making it easier to navigate letters through. Anti-vandal: the all aluminium 12-inch letter plate is constructed with brushes facing outward, making it impossible for vandals to access the letterbox and place items like fireworks.