Experience the heat, learn the signs, and master control. The Flashover Training Structure is Forge Fire’s most advanced Class A live-fire unit, purpose-built to teach firefighters how to identify, react to, and survive flashover conditions in a controlled, NFPA 1402-compliant environment. Engineered with heavy-duty steel construction, 2400°F-rated ceramic insulation, and integrated venting systems, this structure delivers the realism of extreme heat and smoke behavior while maintaining instructor control and firefighter safety. The burn chamber is lined with non-exposed refractory insulation to withstand repeated flashover evolutions, while the adjoining fire protection area provides a secure buffer and observation zone for instructors and students. Dual cool air intake vents and heat release vents allow precise control of temperature and smoke layering, and a reinforced insulated door enables safe reloading and cleanout after each burn. The burn cell is fully modular for service, allowing rapid replacement or reconfiguration of components to maximize longevity, simplify maintenance, and minimize training downtime. Every element of this system is designed for repeatable, safe, and effective flashover recognition training.