1/2"x4'x8' STYROFOAM R3

1/2x4x8 Styrofoam R3: Economical closed-cell, moisture-resistant 1/2 inch thick, 4 feet wide, and 8 feet long Styrofoam insulation with an R-value of 3. Retains R-value after exposure to moisture, making it perfect for various general-purpose insulation needs. Ideal for walls, floors, and roofs in residential and commercial buildings, this Styrofoam board provides reliable insulation and durability. Easy to handle and install, it’s great for enhancing thermal performance in any project. (Brand may vary.)