FEATURES:
Product Type: Rotary Roof Ventilator / Turbine Ventilator (often called a "Whirlybird").
Model/Size: 500 (Indicated by "Powerful wind ball-500," which typically refers to the 500mm throat diameter—a common industrial/commercial size).
Power Source: Wind-powered (no electricity required). It uses the rotation of the vanes to create a vacuum, drawing air out.
Material: Metallic (appears to be a reflective galvanized steel or aluminum, common for durability and weather resistance).
Design: Features numerous rotating vertical vanes mounted on a central spindle, and a circular base for mounting onto the roof curb or ducting.
Primary Benefit: Provides continuous, low-cost ventilation, which helps to:
Remove trapped heat from the attic in summer.
Reduce cooling costs.
Prevent moisture build-up and mold growth in winter.
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