The tour of UL's Northbrook, IL facility was amazing! How often are you able to see a fire demonstration like in the picture below? The test consisted of a 40 square foot pan with a specified amount of a flammable liquid. The demonstration showed how effectively the portable fire extinguisher was able to extinguish the fire. It was very impressive! Also, check out a video of the fenestration test posted by Audrey Goldstein.