Are these suitable for FD30 fire doors?

These are designed for FD30 applications where a letterbox opening is present, helping reduce smoke and fire spread by expanding under high temperatures.

Where can intumescent letter plates be used?

They are commonly used on apartment entrances, HMOs, offices, and public buildings anywhere in the UK where a fire door includes a letterbox.

Do intumescent letter plates help with smoke control as well as fire?

Yes. When exposed to heat, the intumescent material expands to reduce gaps around the opening, helping to limit the passage of hot smoke and flames.

What else should I fit for a compliant fire door setup?

For better door performance, pair fire door hardware with compatible fire door closers, fire/acoustic seals, and appropriate door accessories based on the door specification.

Intumescent Letter Plates

Q: Do I need an intumescent letter plate for my fire door?

Yes – if a fire door has a letterbox opening, an intumescent liner/letter plate helps maintain the fire resistance by sealing gaps when exposed to heat.

Q: What finishes are available for intumescent letter plates?

We supply finishes including polished brass, polished chrome, satin anodised aluminium, and satin stainless steel.

FD30 Intumescent Letter Plates – Fire Rated Letterbox Covers UK

Our Intumescent Letter Plates are designed to maintain the fire integrity of FD30 fire-rated doors while still allowing safe mail delivery. Perfect for apartments, HMOs, offices, and public buildings, they feature heat-activated seals that expand in extreme heat to block fire and smoke.

Why Choose a Fire Rated Letter Plate?

Standard letter plates can compromise a fire door’s performance. Our fire resistant letterbox plates, tested to BS 476 and EN 1634-1, expand under high temperatures to seal the opening – meeting Approved Document B requirements for UK building safety.

Finishes, Sizes & Applications

Available in polished brass, polished chrome, satin anodised aluminium, and satin stainless steel, these FD30 fire door letter plates complement any architectural ironmongery project. Commonly installed in residential blocks, HMO corridor doors, and commercial premises in cities such as London, Manchester, Birmingham, Leeds, and Edinburgh – with UK-wide delivery available.

For complete compliance, pair with fire door closers, fire and acoustic seals, and door accessories. Can’t find the size or finish you need? Contact us and we’ll assist you.

Eurospec - Intumescent Letterbox Assemblies 254 x 56mm. SSS - SSS

Fire Safety & Compliance in Every Detail

How Intumescent Letter Plates Protect Your Building

Intumescent letter plates are an essential upgrade for any FD30 fire door with a mail slot. The built-in heat-activated seal expands in a fire, creating an airtight barrier that stops flames and smoke passing through.

Perfect for apartments, HMOs, schools, healthcare facilities, and offices, they are tested to BS 476 and EN 1634-1 to meet strict UK fire safety standards.

Pair them with intumescent and smoke seals or door closers for complete fire door compliance.

Need Guidance on Fire Door Compliance?

Speak to Our Fire Hardware Experts

If you’re unsure which fire rated letter plate is right for your project, our team can help. We can advise on Approved Document B compliance, sizing, and finishes – and recommend complementary products such as door accessories and architectural ironmongery.

Frequently Asked Questions

Do I need an intumescent letter plate for my fire door?

Yes – UK building regulations require it for FD30 fire doors with a letterbox opening.

What finishes are available?

Polished brass, polished chrome, satin anodised aluminium, satin stainless steel.

Can these be used in HMOs?

Yes – they are widely installed in HMOs, apartment blocks, and commercial fire doors.

UK-Wide Supply from Leading Brands

Quality You Can Trust

We deliver intumescent letter plates nationwide – to London, Manchester, Birmingham, Leeds, Glasgow, and beyond. Partnering with trusted names such as Carlisle Brass, Heritage Brass, and From The Anvil, we ensure every fire door component meets the highest UK safety standards.