CL1200 & CL1911 with Light Trap

CL1200 & CL1911 with Light Trap

Fresh Air Supply with the Greatest Range

Big Dutchman's wall inlets are made of a shock-proof, recyclable, non- deformable and UV-stabilised plastic material. The insulated inlet flap is kept in a closed position by rust-proof steel springs, thus sealing the building airtight. The inlet flap opens through downward pull. This allows very precise regulation of the inlet opening in each season.

The corresponding control set opens the fresh air inlets either all at once or individually. With the patented advanced inlet control (not applicable for inlets type B/F), a single action at each inlet pre-defines which inlets open first and which open later.

The inlets can also be combined with a Light Trap to reduce the incidence of light in the house without affecting the air flow rate. The easy to assemble, lightweight Light Trap prevents direct sunlight in the house with a light reduction of 6000:1, while being easy to clean and maintain.


  • Provides ideal supply of fresh air with negative pressure ventilation
  • Strong tensions springs ensures exact control of the inlet opening
  • Provides stable air circulation all the way to the centre of the barn
  • Ensures uniform temperatures in the entire barn while heating requirements remain low
  • Made of high-quality materials to ensure a long service life of the inlets
  • Very versatile application
  • Easily cleaned with a high-pressure cleaner


  • Advanced inlet control creates stable air jets, especially with minimum ventilation
  • Strong tension springs close the insulated and non-deformable inlet flap (integrated profile made of aluminium), so the barn is absolutely airtight
  • Made of a shock-proof, recyclable, non-deformable and UV-stabilised plastic material
  • Patented advanced inlet control