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Home Delivery
  • Local deliveries (HX, HD, LS, YO, BD, WF, & HU) £20–£30 for orders under £1000, and free over £1000.
  • Other UK postcodes – A flat fee of £48 inc VAT applies when you purchase internal doors – Enjoy free shipping on orders above £1000*
  • For smaller items or ironmongery, a flat rate of £15 inc VAT applies.

*Please see our Delivery Charges page for full details and exceptions.

COLLECTION
  • Prefer to pick up? Collect your items for FREE from our office or warehouse. Call us to find your nearest collection point and arrange a suitable day.

Lead Times

  • In-stock internal/external doors are delivered within 3-5 working days*
  • Ironmongery 1-2 working days
  • Need it fast? We offer next day delivery – get in touch for a price. Order before 10:30am for next working day delivery on most doors. *Charges and lead times vary by postcode and supplier, so please contact us for a quote.

Backorder Policy

  • If any part of your order is out of stock/on backorder for more than 2 weeks, we can offer to split deliveries at no extra cost.

For full delivery details, visit our Delivery Information page.

Fire Door Kit Office Locking Door Severe Duty Cylinder & Turn Keyed Differ SSS

£269.73 inc. VAT
£224.78 ex. VAT

in stock

updated daily – subject to change

Delivery Lead Time: 3-5 working days

Delivery Lead Time: 1-2 working days

Delivery Lead Time: made to order 3-4 weeks

Delivery Lead Time: 1-2 working days

Delivery Lead Time: 3-5 working days Colour Finishes: Approx. 4 weeks

This Fire Door Kit – Office Locking Door – Severe Duty is a fully compliant, high-performance solution for FD30 and FD60 fire doors in extreme-use environments. Designed for public buildings and high-traffic areas, it includes severe duty, tested ironmongery with a cam action closer and a long-life satin stainless steel finish.

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Fire Door Kit – Office Locking Door (Severe Duty)

This Severe Duty Fire Door Kit has been engineered for the most demanding environments where doors are subject to constant use, misuse, and even abusive or violent operation. Designed, tested, and certified for FD30 and FD60 fire doors, it is ideal for public buildings, education, healthcare, leisure, and commercial settings with more than 40 occupants.

Supplied by Doorphoria, a trusted door supplier in Halifax and Huddersfield, this tradefit TF Grade 4 fire door kit meets the highest duty classification available. All components are tested to CE and UKCA Severe Duty standards and cycle tested to 500,000 operations, ensuring exceptional durability and long-term performance.

A key feature of this kit is the cam action overhead slide arm door closer, which significantly reduces the force required to open the door. This improves accessibility, reduces strain on users, and minimises wear on handles and locks. The non-projecting slide arm design improves safety, prevents objects being hung from the door, and offers a clean, modern appearance.

The kit also includes concealed self-lubricating bearing fire door hinges, which automatically lubricate with each door movement. This reduces maintenance requirements and extends hinge life in high-traffic environments. Combined with a DIN mortice euro sashlock, anti-pick cylinder and turn, and return-to-door lever handles, the kit delivers secure, reliable operation day after day.

Finished in satin stainless steel, this fire door kit suits modern commercial interiors, industrial style doors, and robust public-use environments. Backed by an industry-leading 25-year mechanical guarantee, it provides complete confidence that properly tested, accredited ironmongery has been installed for severe duty use.


What’s Included in the Severe Duty Fire Door Kit

Each kit includes premium, severe duty fire rated components:

  • Return to door lever handle – BS EN 1906 Grade 4 certified
  • 3 x concealed self-lubricating bearing fire door hinges (102mm / 4 inch) – BS EN 1935 Grade 14 certified
  • 6 x intumescent hinge pads
  • DIN mortice euro sashlock with square and radius faceplate / keeps – BS EN 12209 Grade 4 certified
  • Intumescent DIN lock wrap – FD30/FD60 rated
  • Pair of 52mm euro escutcheons
  • 70mm 5-pin anti-pick euro cylinder & turn, keyed to differ (3 keys)
  • Cam action overhead slide arm door closer with matching track and cover
  • 2 x 76mm fire door keep shut signs

Ideal Applications

This severe duty fire door kit is ideal for:

  • Buildings with more than 40 occupants
  • Schools, universities, and student accommodation
  • Public-use office doors and civic buildings
  • Shops, restaurants, and retail environments
  • Hotels, bars, leisure centres, and gyms
  • Hospitals, healthcare facilities, and public toilets
  • Warehouses and factories with high door usage

Specifications & Compliance

  • Fire rating: FD30 / FD60
  • TF Grade: 4 – Severe Duty
  • Maximum door width: 1100mm
  • Maximum door weight: 80kg
  • Maximum door thickness: 35–44mm
  • Conforms to BS 8300 guidance when used as part of a compliant door set
  • 25-year mechanical guarantee

Installation & Fire Door Guidance

Correct installation is critical in severe duty environments.

  • Install using a competent professional
  • Fit in line with the fire door manufacturer’s certification
  • Order intumescent strips, kickplates, and door stops separately to suit your door
  • Using a complete kit reduces risk and improves long-term performance

Why Buy from Doorphoria?

Doorphoria supplies specialist fire door kits, internal fire doors, and fire rated ironmongery across Halifax, Huddersfield, West Yorkshire, Manchester, Leeds, and Liverpool, with fast UK-wide delivery available. Our team regularly supports projects in education, healthcare, and public buildings and can help specify the correct solution for severe duty use.

Severe Duty Fire Door Kits in Halifax, Huddersfield & the Northwest

Looking for severe duty fire door kits near me? Doorphoria supplies Grade 4 fire door kits across Halifax, Huddersfield, Manchester, Leeds, Liverpool, West Yorkshire, and Lancashire, with reliable nationwide delivery.

Weight: 5 kg
SKU: DB-34878-P1
Home Delivery
  • Local deliveries (HX, HD, LS, YO, BD, WF, & HU) £20–£30 for orders under £1000, and free over £1000.
  • Other UK postcodes – A flat fee of £48 inc VAT applies when you purchase internal doors – Enjoy free shipping on orders above £1000*
  • For smaller items or ironmongery, a flat rate of £15 inc VAT applies.

*Please see our Delivery Charges page for full details and exceptions.

COLLECTION
  • Prefer to pick up? Collect your items for FREE from our office or warehouse. Call us to find your nearest collection point and arrange a suitable day.

Lead Times

  • In-stock internal/external doors are delivered within 3-5 working days*
  • Ironmongery 1-2 working days
  • Need it fast? We offer next day delivery – get in touch for a price. Order before 10:30am for next working day delivery on most doors. *Charges and lead times vary by postcode and supplier, so please contact us for a quote.

Backorder Policy

  • If any part of your order is out of stock/on backorder for more than 2 weeks, we can offer to split deliveries at no extra cost.

For full delivery details, visit our Delivery Information page.

  • If any part of your order is out of stock/on backorder for more than 2 weeks, we can offer to split deliveries at no extra cost.

For full delivery details, visit our Delivery Information page.

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Email us anytime for more detailed enquiries. sales@doorphoria.co.uk

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