BIG Fire & Ventilation is a German company (founded in 1991 as BIG Brandschutz Innovationen) that develops and manufactures advanced firefighting and ventilation equipment for fire services, disaster response, and civil protection worldwide. The company was a pioneer of positive-pressure ventilation in Europe and today produces high-performance fans, mobile large ventilators, foam generators, and portable smoke blockers. Their equipment is designed to remove smoke and heat in complex structures such as tunnels, high-rises, airports, and underground garages, improving visibility, safety, and overall rescue conditions during emergencies.