Supreme F60 / F90 Steel Hatch box

Standard Features

• Spring-assisted retractable (concertina) loft ladder
  • Easy to operate, requiring less than 3 kg of force to open/close.

• Retractable ladder manufactured from pressure die-cast aluminium
  • Lightweight
  • Strength
  • Stability
  • Durability

• High strength, heavy duty loft ladder, with a load capacity of 200 kg per step

• Supplied assembled in a steel hatch box with trapdoor
  • Hatch box heights from 240 mm to 1600 mm
  • Snap-lock closure mechanism
  • Painted in grey/beige primer – RAL 1019

• Fire resistant loft ladder and hatch box – tested to 60 minutes (EI₂60) and 90 minutes (EI₂90) from below according to EN 1363-1, EN 1634-1 and ÖNORM B 3860 by IBS Linz.
  • Copy of the certificate available on request.
  • Please note – the maximum aperture dimension that could be tested was 1400 mm x 800 mm.
  • A deviation of 15% is permitted in structural opening length and structural opening width (always starting from the test size 1400 x 800 mm). The combination of length and width – the surface area – can be maximum 20 % larger than the test area (1400 x 800 mm).

• High thermal energy efficiency (U-value of 0.57 W/m²K (F60 version) and U-value of 0.93 W/m²K (F90 version), calculated by manufacturer according to DIN EN ISO 6946)
  • Reducing loss of heat and lowering energy costs

• Can be made-to-order to meet your exact dimensional requirements, for floor-to-ceiling heights of up to 4600 mm
• Large steps / treads for improved safety, comfort and ease of egress
  • Maximum stair width supplied to fit your floor-to-ceiling height and opening width
  • Step width ranges from 200 mm (for a 595 mm opening width) to 580 mm (for opening widths of 1035 mm and over).
  • Step depth from 140 mm (for steps up to 380 mm wide) to 160 mm (for steps between 430 mm and 580 mm wide)

• Available with a wide range of accessories

Optional Features

• Available with a low-noise electric motor for the ultimate in convenience (contact us for details)

• Can also be specified with a steel hatch box to meet F30 fire resistance (visit the Supreme F30 Steel Hatch box product page for details).

The Supreme with fire-rated F60 / F90 Steel Hatch is available as a BIM model/object from the NBS National BIM library in IFC and Revit format…

Alternatively, please click here to view our full range of available BIM models.

• Manufactured and tested to EN 14975 (certified by TÜV SÜD)

• Supplied with a manufacturer’s 2-year full warranty and 10-year parts warranty

• Tested (from below) to EN 1363-1, EN 1634-1 and ÖNORM B 3860 by IBS Linz for fire resistance of 60 minutes (EI₂60) and 90 minutes (EI₂90).

Expected life

• 30 years or more when correctly installed and maintained.

Recyclability

• Primary materials are die-cast aluminium (ladder) and steel (hatch box frame). An estimated 90% of all materials used in the product and packaging are recyclable.

Red List Materials

• Does not contain materials listed on the International Living Future Institute’s Red List.

Further information

• For further information about our sustainability policies, please click here.

• 1.5 mm thick steel hatch box with a steel trapdoor.

• EI₂60 trapdoor construction:
  • The trapdoor is made from 1 mm thick sheet steel infilled with 2x 37 mm of mineral fibreboard to give a 60-minute fire resistance (EI₂60).

• EI₂90 trapdoor construction:
  • The trapdoor is made from 1 mm thick sheet steel infilled with 2x 30 mm of mineral fibreboard, plus a layer of gypsum board between, to give a 90-minute fire resistance (EI₂90).

• There is a 60 mm wide lip (40mm available on special request) to the bottom of the lining around the external edge, which is designed to butt up against the ceiling to help prevent flame and smoke ingress.

• Please ensure that you maintain the fire resistance by filling the gap between the fire rated hatch box and the structural opening with a fire resistant mortar to a depth of at least 180 mm. For this product we recommend mortar class 3 according German standard DIN 18580.