General description The 2 Pcs 110mm Non Power Roof Ventilator Wind Turbines are designed to efficiently ventilate attics and other spaces without the need for electricity. Constructed from high-quality 201 stainless steel, these ventilators are rustproof and heat resistant, making them ideal for various weather conditions. They ensure quick air release while protecting your space from rain and moisture, providing a reliable solution for both residential and light commercial applications. Technical specifications Tube diameter: about 4.33 inches / 11 cm Turbine diameter: about 7.48 inches / 19 cm Height: about 7.48 inches / 19 cm Material: Stainless steel Color: Silver Measurement allowed error: +/- 1-3 cm Usage The non power roof ventilators are suitable for a variety of spaces, including: Factories Farms Production workshops Kitchens Roofs Houses They provide continuous and noiseless operation, ensuring a comfortable environment by effectively exhausting stale air. Other information