Manual Chain-Operated High Window Opener for Casement Windows - Fire Smoke Exhaust Ventilation System

This manual chain-operated opener is specifically designed for high-up casement windows, providing an effective solution for fire smoke exhaust and ventilation needs. Engineered for ease of use, it allows for the effortless opening and closing of windows positioned at heights, ensuring optimal airflow and safety without requiring electrical power. Its robust construction ensures durability and reliable performance, making it suitable for both residential and commercial applications. Ideal for enhancing indoor air quality, this system is an essential tool for maintaining a safe and comfortable environment. Specification: 300MM stroke Manufacture country: China Instructions included: No