The "Square" acoustic foam is a sound-absorbing material designed for environments requiring clear sound without reflections, like vocal booths or home studios. Its open-cell polyurethane structure transforms sound energy into heat, while 3D surface patterns scatter reflections, improving mid- and high-frequency sound. This foam reduces flutter echoes and enhances overall sound quality without overloading the room. Specifications: Dimensions: 50x50 cm (20x20 inches) Thickness: 3 cm, 5 cm, 7 cm (1.3", 2.1", 2.9") Material: Open-cell polyurethane foam Density: 25 kg/m3 (1.8 lb/ft3) NRC: 0.2 – 0.94 Tensile strength: 90 kPa Temperature resistance: 122 °F Pore size: ~400 pores/cm2 Benefits: High NRC for sound absorption Lightweight and easy to install Aesthetically appealing Versatile for various surfaces Note: Foam is delivered compressed; unpacking should be done in a warm room for optimal recovery. Avoid storage in compressed form for more than 30 days.