Feature: 1. The acoustic foam enables sound quality perfection and reverberation reduction through acoustic diffusion. 2. 6‑wedged soundproof panel has excellent sound absorption effect, it's also a great decoration on your wall. 3. Adopting premium flame retardant material, the acoustic foam is non‑flammable, safe and reliable to use. 4. Can be flexibly applied in many places, such as studio, control room, home, home theatre, office, and so on. 5. You can choose to use stickers or acoustic foam spray glue to fix the acoustic foam on wall, very convenient. Specification: Item Type: Acoustic Foam Product Size: Approx. 30 x 30 x 5cm / 11.8 x 11.8 x 2in Product Function: Perfect sound quality, acoustic diffusion, decoration. Scope of Application: Recording studio, control room, home studio, home theatre and office. Working Principle: Acoustic diffusion and sound absorption. Packing Method: Compressed and packed. . Package List: 48 x Acoustic Foam Note: 1. After opening the vacuum package, if the rebound effect is not good, soak it in water for 1‑3 minutes, wring it out gently, and then place it in a ventilated place to air dry or blow dry with a hair dryer. This method can make the soundproof foam rebound faster and more neatly; 2. Light‑coloured sound‑absorbing foam is prone to oxidation and discolouration, but it does not affect the function and quality. Please purchase with caution; 3. The product does not include stickers and soundproof foam spray glue.