Technical Features:

• Energy label
  - Component: 0.43 W/m²K*
  - Bottom cover: 0.80 W/m²K*
  - Top cover: 0.68 W/m²K*
  * calculated by manufacturer according to DIN EN ISO 6946
• Energy efficiency
  - Air permeability Class 4 certified*
  * certified by IFT Rosenheim according to DIN EN 12207 / 12114
  - Circumferential seal (triple)
  - 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)
• Electronics
  - 24 Volt drive
  - Low noise with emergency power supply
  - Control unit with one button
  - Automatic limit stop and safety stop
• Hatchbox / hatch cover
  - Water repellent and treated with fungicide
  - Including additional treads in the hatchbox
  - 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 per tread
  - We always deliver the maximum possible tread width – see page 100 - 103
• Ready-to-install with standard accessories
  - Telescoping handrail
  - Cover strip, wood natural
  - Operating pole