Powerful wind ball-400/1*20

FEATURES:

• Product Type: Rotary Roof Ventilator / Turbine Ventilator (commonly called a "Whirlybird").

• Model/Size: 400 (Indicated by "Powerful wind ball- side 400"). This number typically refers to the 400mm throat diameter—a common size for larger residential homes or standard commercial/factory spaces.

• Power Source: Natural Wind-Powered (No electricity required). The wind causes the vertical vanes to spin, which creates a negative pressure (a vacuum) inside the throat, actively drawing air out of the building.

• Material: Metallic (Likely Stainless Steel or Aluminum, based on common industry practice for durability, corrosion resistance, and light weight).

• Design: Features a dome-shaped head with rotating vertical vanes, designed to be waterproof and repel dust.

• Primary Benefit: Provides cost-effective and continuous ventilation to:

  • Cool the roof cavity in summer, lowering indoor temperatures and reducing air conditioning load.

  • Remove moisture/condensation in winter, preventing structural deterioration and mold growth.