Excellent natural ventilation system for fattening farms. Manufactured entirely in stainless steel 304 to guarantee resistance to external climatic factors and offer a long life span.
They have been designed to obtain the maximum possible ventilation with its grid system, which can be regulated by an internal hinge that can be tilted by a pulley system, driven by a motor system or manually, thus reducing the energy consumption of the farm.
With this system, hot air is extracted in a linear way throughout the building, without leaving any unventilated points or spaces.

  • Airtight seal.
  • Made of stainless steel 304, 1mm thick.
  • Base body designed in one piece.
  • Adjustable tilting opening inside the drawer.
  • System especially indicated to regulate the ventilation in a natural way.
  • Easy installation on the roof, with the option of placing welded skirts on the sides of the ridge for greater watertightness and strength.
  • Interior of the drawer cut by laser
  • Adjustment of the opening integrated into the base body of the ridge by means of HINGES
  • Reinforced with a 30 x 3mm tape deck/handrail
  • Stainless steel support with pulley for opening fixed to the wall of the building (angular or straight)


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