Space-saving stairs steel hatch F90 with retractable stairway Electro

In public buildings, our weather-resistant solution for the installation in reinforced concrete ceilings, which belong to the fire resistance class F90, have proven very reliable. The low-noise electric motor securely extends and retracts the stairway.

Technical Features:

Steel hatch F90
- Certified 90 minutes from below
* according to DIN4102 Part 2 by MPA Stuttgart
- Installation in reinforced steel cement ceilings from 180 mm that belong to min. F90 classes according to DIN 4102-4
Energy label
- Component: 0.29 W/m²K*
- Bottom cover: 0.93 W/m²K*
- Top cover: 0.68 W/m²K*
* calculated by manufacturer according to DIN EN ISO 6946
Energy efficiency
- Circumferential seal (quadruple)
- Thermal insulation in the covers
Upper cover
- Metal flashing with galvanised sheet steel
- Closure: bar lock
- Prepared for customer-provided profile cylinder
- Edge glued for protection against weather
- incl. rubber hollow profile seal (double) with contact lip for roof membrane
- Side customer-provided insulation max. 40 mm
- Impermeable to driving rain (Class E1200)
Hatchbox / cover
- With circumferential profile frame
- Case height: 33 cm (steel case)
- Wooden insert: water resistant
- Installation allowance 2 cm
Stairs
- Aluminium retractable stairways
- Treads: 25-38, 14 cm deep (made of pressure die-casting)
- Treads: 43-58, 16 cm deep (made of aluminium profile)
- Load bearing 200 kg
Ready-to-install with standard accessories
- Telescoping handrail
- Operating pole
Electronics
- 24 Volt drive
- Low noise with emergency power supply
- Control unit with one button
- Automatic limit stop and safety stop