Since 1990, Leen Huisman has been active in the development, supply and assembly of  Markies® insect mesh systems in horticulture greenhouses.

Especially for the 1, 2 or 3 pane ventilation windows in Venlo greenhouses, Leen Huisman has developed a unique prefab mesh system that folds open like an accordian by means of ribs when the window opens and folds closed when the window shuts. This clever construction ensures that the mesh always folds in the right place, resulting in a long life cycle of the system. The system is made in the factory and can be installed quickly and simply in new and existing greenhouses.