Can telescopic letter plates be used on timber doors?

Yes, telescopic letter plates can be used on timber doors, especially when fitted with a compatible internal cavity or when retrofitted using a backplate.

Do telescopic letter plates come in different finishes?

Yes, they are available in a wide range of finishes, including matt black, satin chrome, antique brass, and marine-grade stainless steel.

Telescopic Letter Plates

Q: What is a telescopic letter plate?

A telescopic letter plate includes a sleeve that connects the outer and inner flaps, making it suitable for uPVC, composite, and hollow-core doors. It prevents draughts, enhances security, and offers a clean finish.

High-Performance Telescopic Letter Plates for UK Front Doors

Telescopic letter plates are the smart choice for modern front doors, offering a secure, draught-resistant, and easy-to-fit mail solution for timber, uPVC, and composite doors alike.

What Is a Telescopic Letter Plate?

A telescopic letter plate, also called a sleeved letterbox, includes an internal sleeve that joins the outer and inner flaps—making it ideal for hollow or insulated doors. It ensures no drafts, improved insulation, and a clean, professional finish across timber, uPVC, and composite setups.

Styles, Finishes & Compatibility

From classic brass effect letter plates to modern matt black and marine-grade stainless steel telescopic options, we supply letter plates in over 20 durable finishes. These are compatible with internal and external door furniture, and suitable for both replacement and retrofit use.

Whether you're searching for an adjustable letter plate for a new composite door or a replacement telescopic mail slot with integrated brushes for added draught-proofing, this range covers every scenario. Many models are fire-rated for use in flats and commercial entrances, and all are designed with UK standards in mind.

Popular Finishes and Matching Hardware

Match your new telescopic letterbox with hardware from our related collections:

We supply top brands including Carlisle Brass, Heritage Brass, Frelan Hardware, and From The Anvil.

If you can’t find the exact size or finish you’re looking for, contact us here — we’re happy to help.

From The Anvil Traditional Letter box Sku 91526

Why Choose a Telescopic Letter Plate?

The Ideal Draught-Proof Letterbox Solution for uPVC, Timber & Composite Doors

A telescopic letter plate is more than just a mail slot—it's a practical solution for sealing the gap between the inner and outer door surfaces, especially on uPVC and composite doors. These letter plates feature an extendable internal sleeve that ensures a snug fit across a range of door thicknesses, making them easy to retrofit without complex joinery.

Thanks to integrated brushes and optional fire-rated variants, telescopic letterboxes help to reduce draughts, improve thermal performance, and support compliance on apartment and commercial entrances. Many options are compatible with fire doors, timber doors, or replacement front doors across the UK.

We supply a wide range of architectural ironmongery to complement your letter plate installation—browse our full Door Furniture and Door Chains collections to finish the look. You’ll also find matching Escutcheons, Cylinder Pulls, and Bell Pushes to complete the front door suite.

Explore Adjustable Telescopic Letter Plates in Over 20 FinishesPerfect for Composite, uPVC, and Timber Doors – Flexible FittingChoose from Fire-Rated and Marine Grade Stainless Steel OptionsMatch with Black, Brass, Chrome or Satin Hardware StylesSecure, Draught-Proof, and Designed for UK Door SizesUpgrade Your Door with a Telescopic Mail Slot Today

Pair with Matching Door Hardware

Complete Your Door Setup with Coordinated Products from Trade Door Handles

When fitting a new telescopic letter plate, it makes sense to coordinate the finish across all your front door ironmongery. Whether you prefer Antique Brass, Matt Black, or Satin Chrome, our wide selection of matching hardware ensures a cohesive and professional result.

Explore matching Door Knockers, Centre Door Knobs, and Mortice and Rim Knobs to complete the look. If you're upgrading a modern home or working on a heritage renovation, we also supply Multipoint Door Handles and Door Handles on Backplate for full consistency.

At Trade Door Handles, we offer UK-wide delivery and support both trade professionals and homeowners alike. Need help choosing the correct product or finish? Just contact us here—we’re always happy to assist.

Frequently Asked Questions

What is a telescopic letter plate?

A telescopic letter plate has a connected inner sleeve between its flaps, sealing the door cavity and preventing draughts or water ingress.

Can I use a telescopic letter plate on a timber door?

Yes — while designed for uPVC and composite, many models are suitable for timber doors too, especially with retrofit backing plates.

Do these come in black, brass, and stainless steel finishes?

Absolutely. We offer over 20 finish options including matt black, antique brass, polished chrome, and marine-grade stainless steel.