DUCO - Natural ventilation
 Duco window ventilation systems take care of the natural supply of fresh air through the wall in dry rooms (living and working rooms). Unlike open windows, these systems are safe against burglary, rain and insects. In combination with the mechanical exhaust of polluted air through "humid" rooms (kitchen, bathroom, ...), these systems take care of a healthy and pleasant indoor climate. Depending on the type, they can be placed on glass, window or between carpentry bars, on each type of window (PVC, ALUMINUM, WOOD, ...) and are provided with an Air Inlet (ODP). The recommended height is a minimum of 180cm above the floor.   

SELF-ADJUSTABLE VENTILATION = ENERGY PROFIT WITH RETENTION OF NATURAL VENTILATION 
-Ventilation in an economical way with natural ventilation. 
-Even amount of ventilation 
- controlled ventilation = energy efficiency. 
-Small chance of mold formation: this is not only an aesthetic problem, but also very bad for the health of buildings. In addition, it is the cause of allergic diseases in humans. 
-Better indoor air quality. 
-Sufficient supply of fresh air for users of rooms and appliances that consume energy. 
-Natural supply of fresh air, without motor with its noise and energy consumption. 
-Simple window ventilation system = easy installation. 
-No maintenance costs. 
-Profiles are easy to clean. 
-No draft - users do not feel the need to close the ventilation profile. 
-Low investment: no need to ventilate with WTW system (special ventilation ducts). 
-Very important - never more condensation on the glass.     

Duco ventilation profiles guarantee air quality as well as energy efficiency. The air flow is supplied in a natural way by means of an adjustment cover on one side and a self-adjusting cover on the other side. The self-adjusting cover works mechanically and makes sure that the amount of ventilation remains the same when the wind strength changes, which means that the regulation of the amount of air is independent of the strength of the wind.