How To Specify Fire Doors

It is important to specify your exact needs. Whilst the specifications below are our basic specifications, we would recommend that you make the following information clear in your specification / schedules:

  • Class of door
  • Single or double leaf
  • If double, equal leaf or unequal leaf
  • Wall thickness and finish
  • Hand of doors
  • Single or double rebated frame

We are here to help you

If you need any information or guidance, please speak to us.

1. Type of Door

SANS 1253:2016 sets out the door types permitted. Listed below are the door types we can supply:

  • Single leaf, hinged single action
  • Double leaf, hinged, single action
  • Single leaf, horizontal sliding
  • Double leaf, horizontal sliding
  • Rolling steel doors

2. Measurements

Choose one or the other:

  • Opening size
  • Single door leaf size

If double door please also supply:

  • Active leaf size
  • Passive leaf size

An example of a shop drawing that we generate as part of our door installations.

3. Door Class

As set out in SANS 1253:2016, a fire door assembly shall have a fire resistance of Class A, B, C, D, E or F:

Allandel Class E Fire doors

Half hour fire doors
30 minutes

Allandel Class A Fire doors

One hour fire doors
60 minutes

Allandel Class B Fire doors

Two hour fire doors
120 minutes

Allandel Class D Fire doors

Two hour HIGH RISK fire doors – 120 minutes

4. Door Finish

  • For painting (MDF finish)
  • View panel
  • Grooves
  • If veneer, please specify

5. Wall – type, thickness and finish

This information is essential in determining the thickness of the finished wall for the frame width.

Wall type:

  • Brick
  • Concrete
  • Dry wall

Wall thickness:

Typically plaster thickness is 15mm. Thus a 110mm brick wall with plaster both sides (PBS) = 140mm wall thickness

Wall finish:

  • PBS (plaster both sides)
  • POS (plaster one side)
  • NP (no plaster)

6. Door Location

  • Internal door
  • External door

Fire Door Frames

7. Rebates

  • Single rebate
  • Double rebate

8. Material

  • Galvanised mild steel
  • Timber

9. Reveals

  • Hinge – 32mm / 50mm
  • Stile – 32mm / 50mm
  • Lock – 32mm / 50mm
  • Head – 32mm / 50mm

10. Types

  • Build in (lugs)
  • Bolt on
  • Dry wall

11. Additional

  • Pre-hung

Steel Cladding:

  • One side
  • Both sides


It is important to confirm the rebate type that you require when specifying double doors. The options available on the Allandel door range are as follows:

Flush 25mm deep rebated meeting style.

This is typically specified in front-of-house type doors and on doors that require veneering and need to be visually appealing. Allandel are proud of our achievement in being able to offer this exclusively across our range, with the only exception being for Class D doors.

alvanised mild steel slam bars.

This is typically used in back-of-house type doors and in high traffic / heavy duty / service doors.

Frame Profiles

Lug and hole setting out:

  • 5 for doors less than 2 100mm
  • 6 for doors more than 2 100mm
  • Top and bottom 100mm in from inside edges
  • Remainder equally spaced between top and bottom holes / lugs

Build-In Frame

Bolt-On Frame

Drywall Frame

12. Hand of Door

How to determine the hand of a single door:

Stand in front of the door with the door opening TOWARDS yourself. The ‘hand’ of a single door is determined by the side on which the hinges are fitted.

How to determine the ACTIVE hand of a double door set:

Open the door towards yourself.

13. Locks

Lock height:

  • Standard 1100 mm
  • No Lock
  • Other / custom (please specify)

If a double-door, is a lock required? If a lock is required on a double door, ask about our rebate conversion kit.

If using a mag-lock:

Single doors

  • Lock on stile
  • Lock on head

Double doors

  • Active leaf only
  • Both leaves

We are here to help you

If you need any information or guidance, please speak to us.