The flat roof mounting system VarioTwin® Large is a system which impresses with its variable shape and stability.

An absolute highlight of the product is the fact that it can be extended indefinitely and is only limited by the amount ofspace available. Thanks to the variability of the installation it can be positioned without gaps between the individual elements and is therefore not susceptible to wind damage. Owing to the VarioTwin® Large‘s design virtually all standard solarmodules can be fitted horizontally. The individual elements are connected using the VarioTwin® Large stacking system.

The universal construction and resulting flexible installation also ensure that it is easy to determine the optimal amount of ballast required. The side opening on the VarioTwin® Large prevents heat accumulation and subsequent reduction in efficiency of the solar panels. Additional holes drilled into the stand have a dual function allowing water to run off and cable clips to be secured.

Quick and easy installation
Suitable for virtually all standard solar panels
Optimal cooling effect thanks to built-in side openings
Installation without roof penetration
Permits installations of any length
HDPE material / non-conductive

Technical details

Dimensions / Weight

Length: 1600 mm
Height: 480 mm
Width: 610 mm
Weight: 5,46 kg
Angle: 27°


Material: HDPE
UV resistant
For almost every solar module


The following componets are necessary to install pv modules on VarioTwin Large®.

Aluminium rail
  • Profil 40/40 - 6,100 mm
  • Fit for M8 slot nut and M10 hexagon screw
  • Profil: 40 x 40 x 1,5 mm
  • Length: 6,100 mm
Middle clamp
  • Aluminium middle clamp
  • Module frame heights over 19 mm
  • 8 mm frame pad
  • Material thickness: 2.5 mm
  • Anodised
End clamp
  • Aluminum end clamp
  • Fit for framed modules
  • 10 mm frame pad
  • Fit for M8 allen screws
  • Material thickness: 3 mm
  • Anodised
  • Frame heights 36 mm
Slot nut
  • Aluminum slot nut
  • Suiteable for all profils
  • Suiteable for M8 allen screws
  • Anodised

M10 Hexagon screw
  • Hexagon screw  made of stainless steel
  • DIN 933
Allen screws
  • M8 hex socket head screw made of stainless steel A2
  • Serration
  • Suiteable for module clamps
  • DIN 912
Flange nuts
  • Flange nuts made of stainless steel A2
  • Serration
  • Shim made of stainless steel A2 or polyamid
  • DIN 125

Preservation of flat-roofs

Solardirekt recommends to use screen mats to prevent the roofing for mechanical damage.

Non-slip mats
  •   The coefficient of friction increases by using non-slip mats.
Surface protection mat
  • Surface protection mat made of rubber pallets
  • For roofing protection
Fiber protection mat
  • Fiber protection mat made of polyester
  • For roofing protection

Technical Data

Assembly instructions


data sheets & assembly instructions