SierraPine introduces Encore FR, a Class 1 (A) certified, no added urea formaldehyde (NAUF) particleboard. According to the company, Encore FR is the newest addition to the line of sustainable design particleboard products, which include Encore and Encore MR. According to the company, Encore FR is designed specifically for green building and other environmentally sensitive applications where the fire safety is a concern and where local, state or federal fire code regulations must be met.