Acoustic Foam Panels 4 Pack 16.5 x 6.3 x 12 in Adhesive for Wall CeilingAcoustic Foam Panels 4 Pack 16. 5 x 6. 3 x 12 in Adhesive for Wall Ceiling Product Features Efficient Soundproofing The 30kg m_ high density polyurethane foam effectively absorbs high frequency sound waves, improving the absorption of vibration echoes, reverberation, and noise, which helps reduce noise pollution and enhance sound clarity. Excellent Performance This material boasts multiple superior qualities, including soundproofing, heat resistance,