The Rainbow 72 R NBC protection system is perfect for small safe rooms. The Rainbow 72 R system pulls outside air into the protected space through a blast valve to protect from blast waves and their adverse effects and a highly efficient set of filters. This creates an overpressure inside the protected space, which further serves to keep unwanted toxins from entering the protected area. A safe environment is generated, which relieves the occupants from having to wear gas masks or protective clothing.