The combination of polyiso foam insulation and fire-treated plywood makes Hunter Panels XCI PLY Poly-Iso Foam Core Rigid Insulation Panels a versatile and reliable board for a variety of applications, including wall systems, roof decks, and foundation insulation. The panel's design ensures dimensional stability even under pressure, while the fire-treated plywood adds an extra layer of protection, ensuring safety without sacrificing the insulation's energy efficiency. Ideal for both new construction and renovations, this product provides long-lasting value and durability.