Letter Boxes

Learn more about letter boxes

For most doors, the right letter box is the one that fits the opening cleanly, suits the door thickness, and meets the security and performance requirements of the building. When installing or replacing letterplates, consider features like fire-rated designs for compliance, anti-snap flaps to prevent forced entry, and weather-sealed gaskets to protect against draughts and water ingress. 

Typical uses

• Residential front doors: Fitting weather-sealed letterplates across timber, composite, and uPVC entrance doors.

• Property renovations: Replacing tarnished, broken, or draughty letter boxes on existing doors.

• Rental property upgrades: Equipping rental doors with fire-rated and anti-vandal letterplates to meet security and safety regulations.

• New build developments: Installing uniform, security-compliant letterboxes across housing projects.

How to choose the right letter box

• Door thickness: Measure your door thickness before ordering. Standard uPVC and composite doors require mid-depth telescopic sleeves (40mm–80mm), while solid timber panel doors may require narrower sleeve depths (20mm–40mm).

• Draught proofing: Select models with dual internal brush piles and heavy rubber foam gaskets to maximise insulation. Or choose a separate letterplate draught excluder.

• Fire doors: when you need to keep a fire door’s integrity go for a fire-rated letterbox complete with an intumescent liner.

Before you order

Take exact measurements of the existing letter box cut-out (height and width) as well as the fixing screw hole centres to ensure a smooth retrofit. 

If you are installing a complete front door set up, ensure you have all the door furniture and hardware you need. Which may include door viewers and security chains and door handles. 

Explore our range of letter boxes

Browse our collection to find the sleeve depths, finish and security ratings your job needs. 

When you’re looking for a specific feature, you’ll find fire-rated, anti-snap flaps, letterplate draught excluders, and internal draught seal options.