FD90 Mineral Core Internal Flush Door Assembly

Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

Forza Doors Limited

A range of 90 minute fire rated, 59 mm thick, face finished, internal mineral core door assemblies.

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A range of single or double doors and unequal pairs are suitable for fitting into timber or mineral core composite frames. Matched overpanels in a transomed composite frame are also available. Face finished with totally bespoke hand crafted real wood veneers or commercially available decorative laminates, Forza doors and panels will, when installed, be a perfect partner with other chosen finishes to complete a totally co-ordinated project design.

Fire performance:

Forza FD90 doorsets are approved under IFC Field of Application report PAR/10918/01.

Each Forza fire door carries a unique IFCC tamper-evident label that identifies its audit trail of manufacture and affirms its fire characteristics.

General information

Uniclass 2015

Pr_30_59_24_16 Composite doorsetsPrimary


L20/480 Doorsets

L20/55 Doorsets

Specification data - Composite doorsets

Product Reference


90 minutes to BS 476-22:1987.


90 minutes to BS 476-22:1987 and cold smoke control to BS 476-31.1.


A – Single leaf

B – Double equal leaves

C – Double unequal leaves

D – Single leaf and overpanel - Composite transom frame only.

E – Double equal leaves and overpanel - Composite transom frame only.

F – Double unequal leaves and overpanel - Composite transom frame only.




High Pressure Laminate, colour

Insert laminate manufacturer's colour reference.

PVC, high impact, colour

Insert manufacturer's colour reference.

Wood veneer

Insert species.



Two coats high solid UV cured lacquer; clear/ 30% gloss/ other. Insert requirements.

Limed wash

Finished with one coat high solid UV clear lacquer, 30% gloss.

Primed only

Forza primed coat (FPC) for painting by others.

Stained, colour

Insert colour required – finished with two coats high solid UV clear lacquer, 30% gloss.







Consult manufacturer for further details



Minimum density: 650 kg/m³.

Mineral core composite

Finish/ Colour


Two coats of clear/ tinted lacquer, 20% gloss/ other – insert requirements.

Primed only

One/ two coats for paint finishing by others.

Stained, colour

Insert colour required, finished with two coats of high-solid acid-catalysed lacquer.

Vision panels








Consult Forza guidance on FD90 hardware.

Standard product features

Door leaf core:

Rail and stile composite mineral core 51 mm thick (average density 240 kg/m³) faced with two layers of 4 mm MDF (minimum density 640 kg/m³). Overall thickness: 59 mm.


  • Bead profile: Steel ‘Z’ section bead.
  • Glass: 5 mm Firelite.


  • Modulus of rupture (ASTM C 133, minimum): 900 psi.
  • Compressive strength (ASTM C 109-93, minimum): 1586 psi.

Product Options


Concealed/ exposed near match timber hardwood lipping to all four edges before or after applying face finish. Minimum standard finished 3 mm square.

Door frame:

  • Composite mineral core/ 2 mm lippings and 2 mm face veneers. Minimum dimensions: 104 x 47 mm.
  • Timber: Hardwood, 650 kg/m³. Minimum dimensions: 90 x 38 mm.
  • Integral stop/ applied stop 30 mm x 12 mm.

Wood veneer facings:

A wide range of veneers are available, offering a variety of cuts, grain directions and layon matching, including:

  • Book match veneer layon.
  • Random match veneer layon.
  • Slip match veneer layon.

Consult manufacturer for further details.

Vision panels:

Consult manufacturer for further details regarding size and position.

Perimeter seals:

Factory fitted to leaf(s)/ frame, PVC cased intumescent/ smoke/ acoustic seals to manufacturer's choice to meet fire and smoke control and sound insulation as specified in applicable test report or assessment (combined seals permitted).

Third party certifications
  • IFC Certification Ltd: FRTD 497 : Fire performance scheme
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