Feature●TURBINE ATTACHMENT - our best in class turbine creates negative pressure in the ventilation system, to provide unrivaled air flow●PRODUCT DURABILITY - AND RESISTANCE this product is made of the highest quality polypropylene to make sure that not only it reaches you in perfect condition, but it stays that way for year to come●BALL BEARINGS - the turbine is mounted on a special bearing system that is encased in the highest quality oil. Our specially developed system guarantees the best product life in the long term●TWO SHAPES OF THE TURBINE HEAD - based on the specification of the customer choose from either round or oblong shapes, meaning it will look stunning on all homes●CONDENSATION DRAIN SYSTEM - this innovative feature protects against moisture inside of the system, which also prevents freezing in colder climates●ADDITIONAL ATTACHMENT - increases the height of the base by 3 “. condensation drain system, which drains accumulated moisture outside of the turbine vent.Description Our best-in-class turbine creates negative pressure in the ventilation system, to provide unrivaled airflow. Your choice of oblong in 6". The turbine is mounted on a special bearing system that is encased in the highest quality oil. Our specially developed system guarantees the best product life in the long term. This product is made of the highest quality polypropylene to make sure that not only is it shipped to you in perfect condition, but it stays that way for years to come and it is UV resistant.