NMC 0.0045 Pressure sensitive vinyl fire sign has pressure sensitive adhesive backing and is flexible, which allows for mounting on smooth, curved or irregular surfaces. The location of flammable substances, fire alarms, hoses, extinguishers, blankets, and evacuation exits and routes must be clearly marked throughout your facility to not only prevent a fire, but also help ensure your employees' safety. Indoor use. Mounting: yes. Good chemical resistance. Maximum temperature: 178 degrees F. Measures 7-inches length by 7-inches height. Legend "FIRE DOOR PLEASE KEEP CLOSED".