How To Restore The Acoustic Foam To Its Original Size: After opening the vacuum-sealed package, place the acoustic foam in a well-ventilated area for 12-24 hours to allow it to expand. Alternatively, soak the foam in water for one minute, gently squeeze out excess water, then air dry or use a blower to speed up drying. Cost-Effective Noise Reduction Solution: These acoustic foam panels provide an affordable way to improve sound quality in your space. Ideal for creating a better listening or recording environment at home or in a studio setting. High-Density Flame-Retardant Material: Made from flame-retardant and environmentally friendly polyurethane material for safe use. Designed for professional acoustic control, sound absorption, and noise reduction. Helps reduce unwanted sound reflections, reverberation, and flutter echoes in small to medium-sized rooms. Installation Method: It is recommended to use adhesive tape on the four corners of the back of the foam panels for wall mounting. Alternatively, spray adhesive can be used based on individual installation needs. Multi-Functional Use: Suitable for use in home theaters, recording studios, gaming rooms, and offices. Can be applied to walls, ceilings, and doors. Also works as a desk privacy panel or sound isolation shield. Ideal for acoustic treatment in studios, home entertainment rooms, and karaoke rooms. Color: Black Material: Polyurethane Size: 12 x 12 x 48 cm Package Contents: 4 x Soundproofing Foam Panels Note: The package includes only the items listed above. Other accessories or products shown are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement tolerance is +/- 1-3 cm.