General description Made of high-quality eco-friendly polyurethane foam, this pack of 24 pyramid-shaped soundproof foam padding treatment panels is durable and effective, posing no health hazard and being safe to use. The acoustic foam panels feature a classic design that provides excellent soundproofing and echo absorption, delivering strong noise reduction where moderate dampening is desired. They are ideal for spot sound treatment on the walls of your studio or office, suitable for use in recording studios, control rooms, home offices, and home entertainment theaters. Technical specifications Color: Black Material: Polyurethane Size: 30x30x2.5 cm Package Contents: 24x Soundproofing Foam Measurement allowed error: +/- 1-3 cm Usage The studio foam can maintain its sound insulation function permanently. For cleaning, simply dust them occasionally. After opening the vacuum packaging, place the foam panels in a ventilated area for about 24-48 hours to allow them to expand.