HandiFoam's E84 (HFO) Class-2 Closed-Cell Low-Pressure Spray Foam Polyurethane Insulation Kit (Size II-605) meets ASTM E84 requirements with a Class A flame spread rating, making it suitable for code-compliant applications when properly installed. The low-pressure delivery system allows for controlled application, consistent mixing, and minimal overspray, even in hard-to-reach areas. Ideal for rim joists, attics, crawl spaces, and wall penetrations, it adheres to a wide range of substrates including wood, metal, and masonry. Its quick-curing formula supports faster project timelines while maintaining long-term thermal performance and durability in demanding environments.