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FD90FD120Steel

FD90 & FD120 Doorsets

FD90 and FD120 doors resist fire for 90 or 120 minutes. They are specified for compartments where a fire would be large or long — plant and transformer rooms, high-fire-load storage and some industrial and infrastructure sites — and most are steel doorsets built and certified for that purpose.

Guide price £1,900–£3,800 per single doorset, supplied & fitted, ex VAT. Fixed after survey.

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Grey steel double doorset in a plant room corridor

FD90 & FD120 Doorsets at a glance

Fire resistance90 or 120 minutes (E90 / E120, EI where specified)
ConstructionUsually steel; some specialist timber systems
Typical usePlant rooms, transformer rooms, high-fire-load stores
ConfigurationsSingle, double, with or without vision panels
HardwareSteel-specific hinges, closers, panic hardware where needed
Guide price£1,900–£3,800 per single doorset, supplied & fitted, ex VAT
Elevation drawing of a fd90 & fd120 doorsets showing frame, intumescent seal line, hinges and hardware

Who needs a 90 or 120-minute door?

These ratings come from the fire strategy for specific rooms rather than general building use. Common cases include electrical intake and transformer rooms, generator rooms, fuel and chemical stores, data and records rooms where the client wants extra protection, and walls between buildings or occupancies with a high fire resistance requirement.

Steel doorsets for longer ratings

Steel doorsets reach these ratings with insulated cores and specialised frames. They are heavy — a double FD120 doorset needs careful handling, solid fixings and a structural opening fit for the frame. Glazed options exist, but large areas of insulating fire glass are costly, so vision panels are usually kept small.

Pricing and lead times

Guide prices run from about £1,900 to £3,800 per single doorset supplied and fitted, ex VAT, with pairs costing more. These doors are normally made to order, so allow longer lead times than stock FD30 doorsets — we confirm the programme at survey.

Where are FD90 and FD120 fire doors used?

  • Transformer and switch rooms
  • Generator rooms
  • High fire-load stores
  • Separating walls with long ratings

FD90 and FD120 fire doors questions

Are FD120 doors always steel?

Most are, though some specialist timber and composite systems hold longer ratings. The evidence for the exact configuration is what counts.

Can FD120 doors have glass?

Yes, with insulating fire glass tested in that doorset, but panel size is usually limited.

Do these doors need panic hardware?

Only where they are on an escape route and the fire strategy calls for it. Panic hardware must be tested with the doorset.

How long do they take to make?

Usually several weeks as they are made to order. We confirm lead time on your quote.

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FD90 & FD120 Doorsets near you

We supply and fit FD90 and FD120 fire doors across the UK. Choose your area for local guide prices and the rules that apply there.

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Free measure survey. Certificate reference against every doorset.

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