Welcome to the store! How to restore the acoustic foam to its normal size: 1. After opening the vacuum package, place the acoustic foam in a ventilated place for 12-24 hours; 2. Or soak the foam in water for 1 minute, wring it out, and air dry or use a fan. Cost-effective Noise Reduction: These affordable noise reduction products create an excellent listening or recording environment, allowing you to enjoy a great recording experience at home or in the studio. High-Density Flame-Retardant Material: These sound-absorbing foam panels are made of flame-retardant and environmentally friendly materials, ensuring safe use. Professional Acoustic Control: Ideal for sound dampening, acoustic treatment, and noise reduction. Reduce waves, reverberation, and flutter echoes in small to medium-sized rooms. Installation Method: It is recommended to attach tape to the four corners on the back of the acoustic foam panels and then stick it to the wall. Or you can purchase spray adhesive to install the soundproofing foam as needed. Multifunctional Use: Perfect for home theaters, studios, or game rooms for acoustic treatment/isolation, or in offices as a desk privacy panel. Also ideal for recording studios, home theaters, and karaoke rooms. Can be applied to walls, ceilings, doors, etc. Color: Black Material: Polyurethane Size: 12x12x48cm Package Contents: 4 x Soundproofing Foam Your satisfaction is our top priority. We are committed to providing you with the best service. If you encounter any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately, and we will provide you with the best solution!