- 20% off
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From The Anvil - Black Traditional Letterbox
Sale price £130.75 (Inc. VAT) Normal Price: £163.44 £108.96 (Ex. VAT)Unit price /Unavailable - 20% off
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From The Anvil - Aged Brass Traditional Letterbox
Sale price £262.72 (Inc. VAT) Normal Price: £328.40 £218.93 (Ex. VAT)Unit price /Unavailable - 20% off
Eurospec
Eurospec - Intumescent Letterbox Assemblies 305 x 56mm SSS - SSS
Sale price £59.81 (Inc. VAT) Normal Price: £74.76 £49.84 (Ex. VAT)Unit price /Unavailable - 20% off
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From The Anvil - External Beeswax Traditional Letterbox
Sale price £168.33 (Inc. VAT) Normal Price: £210.41 £140.28 (Ex. VAT)Unit price /Unavailable - 20% off
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From The Anvil - Satin Brass Traditional Letterbox
Sale price £262.72 (Inc. VAT) Normal Price: £328.40 £218.93 (Ex. VAT)Unit price /Unavailable - 20% off
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From The Anvil - Polished Brass Traditional Letterbox
Sale price £249.60 (Inc. VAT) Normal Price: £312.00 £208.00 (Ex. VAT)Unit price /Unavailable - 20% off
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From The Anvil - Matt Black Traditional Letterbox
Sale price £137.28 (Inc. VAT) Normal Price: £171.60 £114.40 (Ex. VAT)Unit price /Unavailable - 20% off
From The Anvil
From The Anvil - Satin Marine SS (316) Traditional Letterbox
Sale price £302.13 (Inc. VAT) Normal Price: £377.66 £251.78 (Ex. VAT)Unit price /Unavailable - 20% off
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From The Anvil - Pewter Traditional Letterbox
Sale price £168.33 (Inc. VAT) Normal Price: £210.41 £140.28 (Ex. VAT)Unit price /Unavailable - 20% off
From The Anvil
From The Anvil - Polished Marine SS (316) Traditional Letterbox
Sale price £302.13 (Inc. VAT) Normal Price: £377.66 £251.78 (Ex. VAT)Unit price /Unavailable - 20% off
From The Anvil
From The Anvil - Aged Bronze Traditional Letterbox
Sale price £302.13 (Inc. VAT) Normal Price: £377.66 £251.78 (Ex. VAT)Unit price /Unavailable - 20% off
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From The Anvil - Polished Nickel Traditional Letterbox
Sale price £288.99 (Inc. VAT) Normal Price: £361.24 £240.83 (Ex. VAT)Unit price /Unavailable

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.
Frequently Asked Questions
What is a telescopic letter plate?
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?
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?
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.