For your information

You are being redirected to one of our divisional subsites which contains more detailed information on the required division. To navigate back to the main Invicta Group site, please click the link found in the footer at the bottom of the page.

DD240 Durasteel 4 Hour Fire Doors

Quick Quote

Call Benn Larkin Anand Raghavan Ben Tan Krishna Kumar Anand Raghavan Our USA Office on

Home Technical Data Fire Doors DD240 Durasteel 4 Hour Fire Doors

DD240 Durasteel 4 Hour Fire Doors

Durasteel Single Fire DoorLEAF

  • Overall Thickness: 28mm
  • Material: 9.5mm thick Durasteel sheet
  • Jointing Construction: Mitred and Welded


  • Overall Frame Depth: 60mm (FR7) (FR11)
  • Material: 60 x 60 x 6mm thick angle section
  • Jointing: Mitred and Welded joints or cleated constructions
  • Type and Configuration: Single rebate/3-sided frame
  • Threshold Plate: 70 x 10mm thick MS plate (FR15)


  • Frame and Leaf: Standard shop-applied zinc based primer, ready for site painting (P3)


  • Leaf fitted with 3-way shoot bolt mechanism, handle set and rose plates. 2 no. hook and ride hinges and central hinge keep per leaf. Passive leaf on double leaf doorset is fitted with either face fixed tower bolts top and bottom or 2-way shoot bolts


  • BS 476: Part 22: 1987
Dimensional Details Ref Single Leaf Doorset Example Calculation Double Door Leafset Example Calculation
Structural opening width A A 900 A 1800mm
Structural opening height B B 2100 B 2100mm
Overall frame width C (A – 8 = C) 892 (A – 8 = C) 1792mm
Overall frame height D (B – 6 = D) 2094 (B – 6 = D) 2094mm
Door leaf width E (A – 25 = E) 875 ((A – 30)/2 = E) 885mm
Door leaf height F (B – 35 = F) 2065 (B – 35 = F) 2065mm

Durasteel Doors


Share/Like this page

Accreditations & Affiliations