With an ASTM E84 Smoke Development score of 450, Elastochem's Spraymaxx 1/2 lb. 450 Open-Cell Spray Foam Insulation is a safe and reliable option for environments where fire resistance is a concern. This spray foam insulation not only provides excellent soundproofing benefits but also meets fire safety standards, enhancing the overall safety of the application. Elastochem's Spraymaxx 1/2 lb. 450 Open-Cell Spray Foam Insulation is perfect for those seeking an energy-efficient, cost-effective insulation solution with added peace of mind.