Foam Bass Traps Corner Block foam, Studio Foam Sound Proof Foam Panles Noise Dampening Wall Soundproofing(12"X3"X3", Black)4pes

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The soundproofing corner foam recovery the normal size: Open the vacuum compressed package, put the foam panels in a ventilated place about 24-48 hours. Another method is soak the foam in water for 1 minute, press it repeatedly then wring the foam out water, use air dry it or use a hair dryer optionally. Eco-Friendly and Fire-Proof -- Our sound absorbing foam panels crafted from fire-retardant and eco-Friendly material, it is safe to use in small and medium-sized rooms. Improve acoustical quality: For professional acoustic control, sound dampening, acoustic treatment, noise reduction - Reduce waves, reverb and flutter echoes in smaller to medium sized rooms. Easy to install: these sound panels can be installed by anyone! Simply attach spray adhesive or 3M Double Sided Tape (sold separately) to the back of each panel and adhere in the desired position.