Available from Woodgrain Millwork, FIREWALLFR® is a 50# premium industrial particleboard with certified Class 1/Class A fire-rated properties. Boise Cascade engineered FIREWALLFR to meet the heightened protection requirements of today's commercial, institutional, and residential projects. FIREWALLFR also promotes additional durability with MR10 moisture resistance. FIREWALLFR® maintains the company's commitment to quality and possesses the high ponderosa pine content you require for precision fabrication.