The roof ventilation fan applies the theory of convectionbetween natural wind and air to accelerate and transform anyparallel airflow into vertical so as to improve the indoorventilation. The hot air rises and cold air falls, which makes thefan rotate. So the indoor heat, stink and dust are exhaustedeffectively. It also can effectively remove indoor soot, smoke,odor, moisture, heat, decorative harmful gas, dust, humanmetabolism and other dirty volatile mixed-doped odor as well asviruses and bacteria invasion. As a result, it improves the workingenvironment, protects workers'' health and enhances the workingefficiency.

It is widely used in warehouse, toilet, factory, workshop,stadium, tennis hall, assembly hall, garage, paper mill,galvanization factory and coating factory.

Advantages:
1)High-efficiency ventilation
2)High-quality stainless steel body
3)Easy and fast installation.
4)Environmental protection, energy saving and no electricitycost.
5)Stable and durable, dehumidifier, anti-sweat and rain-proof.
6)High sensitivity and no noise.
7)All the ventilators adopt American UBC bearings, freelubrication. Supporting brackets are all made of stainless steel,which has very good corrosion-resistant ability.

Specification:
Model No.: AP150
Material: Stainless steel
Amount of Blade: 20PCS
Total Height: 330mm
Turbine Diameter: 270mm
Ventilation Diameter: 150mm
base Plate Dimension: 260mm*260mm