Ceritica Sound-Absorbing Sheets, 30305cm, Extra Thick, High-Density Urethane Foam Sound-Absorbing Panels, Noise Reduction, Soundproofing for Windows,

[High Density & Outstanding Sound Absorption] Our sound-absorbing material is 5cm thicker than conventional sound-absorbing panels. The sound-absorbing panels are made of carefully optimized polyurethane material with a high-density, extra-thick sponge of 25kg/m³. The interior of the sound-absorbing material is porous. Soundproofing materials are especially important for those living in apartments or condominiums, or for families with small children, who want to avoid complaints and trouble caused by noise. [B1 Class Flame Retardant & Thermal Insulation] Our sound-absorbing materials are certified B1 Class flame-retardant, meaning they are fire-resistant and automatically extinguish when the fire is removed. The sound-absorbing panels are formaldehyde-free, making them environmentally friendly and safe to use. The soundproofing sheets utilize the insulating properties of gas to effectively block heat from the outside. [Excellent Material & Good Resilience] Our sound-absorbing material is made of polyurethane foam, which has excellent resilience and durability, and quickly returns to its original shape even after being folded. Sound-absorbing materials are substances with a high sound absorption rate, allowing them to absorb noise. In addition to preventing sound from reverberating too much, sound-absorbing materials also reduce muddy sound caused by reverberation and unnecessary low frequencies, creating a clear listening environment where only good sound reverberates. [Effectiveness varies depending on installation area] In order to maximize the effectiveness of sound-absorbing material, the installation area is extremely important. In particular, if you want to fully experience the sound-deadening and sound-blocking effects, we strongly recommend installing sound-absorbing material over 70% or more of the room's total wall area. This will efficiently absorb the sound energy that reverberates within the room, and will be highly effective in reducing sound leakage to the outside and improving the muffled sound inside. [Note] This product is packaged in a compressed state. After unpacking, soak it in water for 10-15 minutes, wring it out, and let it dry to restore its original shape. Then, dry it in a well-ventilated area. Depending on the condition of your wall, you may need to purchase double-sided tape or spray adhesive separately. If you have any questions about using the sound-absorbing material, please feel free to contact us. We will respond within 2 hours on weekdays.