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Supreme fire resistant loft ladder with steel hatch box.

Concertina loft ladder with hatch box Load rating of 200kg per tread Overall Load rating. 500kg/m2 Supplied with handrail as standard Available made-to-measure Thermally insulated. U value = 0.92W/m2K EI(2)60 Fire rated loft ladder. 60 minutes from below. EI(2)90 Fire rated loft ladder. 90 minutes from below.

Supreme F60 / F90 Steel Hatch box

The Supreme F60 / F90 fire resistant aluminium loft ladder with steel hatch box…

…lightweight, strength, durability and fire resistance



Material: Pressure die-cast aluminium
Operation: Spring-assisted retractable ladder
Fire resistance: 60 / 90 mins (EI260 / EI290)
Load capacity: 200 kg per step
U-value: 0.93 W/m2K
Max floor-to-ceiling height: 4.6 m

The Supreme F60 / F90 Steel Hatch box is a fire resistant version of the Supreme retractable aluminium heavy duty loft ladder. It is supplied as a ready to fit unit suitable for use in steel-reinforced concrete ceilings. The concertina ladder is manufactured from high strength die-cast aluminium alloy components contained within, and attached to, a fire resistant and insulated hatch box and trapdoor manufactured from sheet steel. The heavy duty spring mechanism allows you to raise and lower the ladder with a minimum of effort. Large steps and pre-assembled telescopic handrail offer comfort, safety and ease of egress.

The Supreme F60 / F90 Steel Hatch box loft ladder is tested according to EN 1363-1, EN 1634-1 and ÖNORM B 3860 by IBS Linz for fire resistance of 60 minutes / 90 minutes from below (EI260 / EI290).


Key Benefits at a glance

  • High strength, heavy duty.
  • Load capacity of 200 kg per step.
  • Ease of use, requiring operating forces of less than 3 kg.
  • High energy efficiency of 0.93 W/m2K.
  • Suitable for very high ceilings.
  • Large steps for comfort and safety.
  • Tested for 60 or 90 minutes fire resistance.
  • Available in standard sizes or made-to-order with a wide range of options and accessories
  • 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 energy efficient (U-value of 0.93 W/m2K, 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
  • 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).
  • 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).

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.

  • 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 200 mm. For this product we recommend mortar class 3 according German standard DIN 18580.



The following accessories are only available for order with a loft ladder.  Please make sure to add the required accessories to your cart before checkout, or contact us directly to discuss your requirements.

Grab rail for use in deep hatch box

Grab Rail

£135 (excl. VAT)


Supreme fire rated loft ladder with an F60 / F90 steel hatch box and trapdoor – 6000288F

Supreme fire rated loft ladder with F60 / F90 steel hatch box and trapdoor plus weatherproof roof hatch – 6000286C

NBS Source

Technical specification and BIM object for the Supreme F60/F90 steel hatch box fire resistant retractable loft ladder can be found on NBS Source.

NBS Source Partner. Premier Loft Ladders products can be found on NBS Source