- 20% off
Eurospec
Eurospec - Intumescent Kit for Lever Action Flush Bolt
Sale price £6.82 (Inc. VAT) Normal Price: £8.52 £5.68 (Ex. VAT)Unit price /Unavailable - 20% off
Eurospec
Eurospec - Intumescent Air Transfer Vent Grille 150 x 150mm - Silver
Sale price £22.66 (Inc. VAT) Normal Price: £28.32 £18.88 (Ex. VAT)Unit price /Unavailable Eurospec
Eurospec - Intumescent Air Transfer Vent Grille 150 x 300mm - Silver
Sale price £41.38 (Inc. VAT) Normal Price: £51.72 £34.48 (Ex. VAT)Unit price /UnavailableEurospec
Eurospec - Intumescent Air Transfer Vent Grille 300 x 300mm - Silver
Sale price £85.06 (Inc. VAT) Normal Price: £106.32 £70.88 (Ex. VAT)Unit price /Unavailable- 20% off
Eurospec
Eurospec - Intumescent Air Transfer Vent Grille 112 x 225mm - Silver
Sale price £30.53 (Inc. VAT) Normal Price: £38.16 £25.44 (Ex. VAT)Unit price /Unavailable Eurospec
Eurospec - Intumescent Air Transfer Vent Grille 225 x 225mm - Silver
Sale price £54.53 (Inc. VAT) Normal Price: £68.16 £45.44 (Ex. VAT)Unit price /Unavailable- 20% off
Eurospec
Eurospec - Intumescent Kit for Door Closer
Sale price £25.25 (Inc. VAT) Normal Price: £31.56 £21.04 (Ex. VAT)Unit price /Unavailable Eurospec
Eurospec - Intumescent Kit for Door Closer
Sale price £31.87 (Inc. VAT) Normal Price: £39.84 £26.56 (Ex. VAT)Unit price /UnavailableEurospec
Eurospec - Intumescent For Concealed Door Chain
Sale price £7.01 (Inc. VAT) Normal Price: £8.76 £5.84 (Ex. VAT)Unit price /UnavailableFrelan Hardware
Frelan - Kit for 150 & 200mm flush bolts 30 min
Sale price £5.20 (Inc. VAT) Normal Price: £6.50 £4.33 (Ex. VAT)Unit price /UnavailableFrelan Hardware
Frelan - Kit for 150 & 200mm flush bolts 60 min 2mm
Sale price £8.68 (Inc. VAT) Normal Price: £10.85 £7.23 (Ex. VAT)Unit price /Unavailable

Fire Door Protection Accessories
Miscellanious Intumescent Kits – Applications, Standards & Best Practice
Choose from door chain intumescent kits, door closer intumescent kits, flush bolt intumescent kits, intumescent door viewer kits and intumescent vents whenever hardware penetrates a fire-rated door. These door hardware intumescent kits provide a thermal break and seal, expanding in heat to protect fixings and restore fire door integrity in line with BS 476, EN 1634 and Approved Document B.
For complete fire door protection, explore our parent Fire & Acoustic Seals hub, plus related collections: Intumescent Seals, Fire & Smoke Seals, Acoustic & Drop Down Seals, Intumescent Letter Plates, Intumescent Lock & Latch Packs and Intumescent Hinge Packs.
Complement these with Door Closers, Door Furniture, Architectural Ironmongery, Accessories and Window Furniture for a fully compliant installation.
Use cases & variants: FD30 and FD60 fire doors; concealed closer recesses; chain keep fixings; flush bolt edge cut-outs; peephole/door viewer bores; and vent openings. Benefits: heat-activated expansion, smoke and fire resistance around hardware penetrations, and enhanced compliance for both new installations and retrofit projects across residential, commercial and industrial settings throughout the UK — from Kendal and Carlisle to London, Manchester, Birmingham and beyond.
Expert Selection Support
Selecting the Right Kit for Chains, Closers, Flush Bolts, Viewers & Vents
Match each hardware type to the correct intumescent fire protection kit:
- Door chains → pads or liners behind chain plates to seal around fixings.
- Door closers (surface-mounted or concealed) → thermal break liners around the body and screws.
- Flush bolts → edge recess liners to strengthen and protect weakened areas.
- Door viewers → intumescent sleeves to protect the peephole bore.
- Vents → intumescent cores that allow airflow in normal conditions and swell shut in a fire.
Review each product’s specification against your fire door rating (FD30 or FD60) and follow the manufacturer’s guidance. Build a compliant fire door set by combining products from our Fire & Acoustic Seals range with the relevant sub-collections above, along with Door Closers and Door Furniture.
Based in Cumbria and serving the whole country, we deliver nationwide — from Kendal and Carlisle to London, Manchester, Birmingham and the south coast. If you can’t find what you’re looking for, please contact us.
Frequently Asked Questions
Do I need intumescent kits after cutting into a fire door?
Do I need intumescent kits after cutting into a fire door?
Yes. Penetrations and rebates can reduce integrity. Correct kits help restore performance and support BS 476 / EN 1634 and UK Building Regulations.
Are intumescent kits available for FD30 and FD60 doors?
Are intumescent kits available for FD30 and FD60 doors?
Many options suit FD30 and FD60. Always check the specific product guidance and the door manufacturer’s instructions.
What hardware types should use miscellaneous intumescent kits?
What hardware types should use miscellaneous intumescent kits?
Door chains, door closers, flush bolts, door viewers and vents commonly require intumescent liners or pads to protect cut-outs and fixings.
Do intumescent vents allow normal airflow?
Do intumescent vents allow normal airflow?
Yes. They ventilate in normal use and swell closed in high temperatures to resist fire and smoke.
Can I retrofit an intumescent door viewer kit?
Can I retrofit an intumescent door viewer kit?
Often yes, provided the door rating and manufacturer guidance are followed.
UK-Wide Supply
Miscellanious Intumescent – Trusted Brands, Nationwide Delivery
Trade Door Handles supports compliant installations across the UK with miscellanious intumescent products for chains, closers, flush bolts, viewers and vents. Enhance projects with complementary categories: Architectural Ironmongery, Accessories, Door Furniture, Window Furniture and Door Closers. Popular UK brands include From The Anvil, Carlisle Brass, Heritage Brass and Frelan Hardware. If you can’t find what you’re looking for, please contact us and we will assist you.