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  • Extra charge Doppel-Deckel DD0,00 €
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Retractable stairways Electro DD

The right stairway for passive house requirements or unheated roof spaces. You can close the upper cover immediately when moving through the attic thus preventing moist air from flowing into the attic and condensing there in the cold areas. With the integrated electric motor the stairway opens and closes as if by magic.

 

 

Technical features:

 

  • Energy label
    - Component: 0.28 W/m²K**
    - Top cover: 0.38 W/m²K**
    - Bottom cover: 0.58 W/m²K*
    * certified according to DIN ISO 12567-1 by IFT Rosenheim
    ** calculated by the manufacturer according to DIN ISO 6946 by IFT Rosenheim
  • Energy efficiency​​​​​​​
    - Air permeability Class 4 certified*
    * certified by IFT Rosenheim according to DIN EN 12207/12114
    - Circumferential seal
    - Thermal insulation in the cover
  • Hatchbox / cover​​​​​​​
    - Hatchbox and cover bottom side:
    white coating
    - Top closure: Turning handle
    - Case height: 63 cm
    - Installation allowance length 2 cm
    - Installation allowance width 1.5 cm
  • Electronics
    - 24 Volt drive
    - Low noise with emergency power supply
    - Control unit with one button
    - Automatic limit stop and safety stop
  • Stairs
    - Aluminium retractable stairways
    - Treads: 25-38, 14 deep (made of pressure die-casting)
    - Treads: 43-16 deep (profile treads)
    - Load bearing 200 kg per tread
    - We always deliver the maximum possible tread width
  • Ready-to-install with standard accessories
    - Telescoping handrail
    - Mounting screws
    - Insulating and sealing block on the hatchbox
    - Operating pole
    - Snap-on white covering strips
    - Bulk insulating material for insulating hollow spaces in the building