Enhance your space with the ROCKWOOL Acoustic Thermal Insulation RWA45 100MM slab, a superior choice for those seeking to manage sound and temperature effectively, ensuring your ceiling, attic, garage, interior walls, and floors are well-insulated. Crafted from high-quality mineral wool, this insulation board boasts an R-Value of 0.034, offering both thermal and acoustic benefits. Safety and durability are at the forefront with this product, featuring fire resistance and a friction fit design for secure installation. The natural brown hue integrates seamlessly into a variety of architectural styles. With a 4-inch (10.16 cm) thickness and designed for ease of use, this insulation slab is an excellent investment for any space requiring acoustic thermal fire insulation.