Metal Construction: The sturdy metal housing and 110mm duct diameter long lastings, suitable for wall or roof installation in various settings Compact & Low Noise Design: Measuring 330x345x78mm with a quiet 43dB operations, this fan fits discreetly while maintaining peaceful surrounding in caravans or greenhouses Easy Installation: Features a standard 110mm pipe connection with 115mm opening size, making it simple to mount in campers, boats, or storage rooms without electrical wiring High Airflows Efficiency: With a powerful 430 CFM airflows and 2500RPM speed, it ensures effective air circulations in enclosed areas such as pet houses and mobile toilets Solar Ventilation: This solar power exhaust fan operates entirely on solar energy, providing ventilation for small spaces up to 5 8 square meters like sheds, kitchens, and bathrooms, Manufacturer: Arecobticy