Drum Room Sound Absorbing Cotton Self-Adhesive Easy Installation Soundproof Cotton Soundproofing Flame Retardant Acoustic Panel (Blue) (Blue)

Applicable scenes: opera house, kindergarten, theater, recording studio, conference room, living room, bedroom, concert hall, etc Material: Rubber cotton / / Color: black, red, yellow, blue / / Area: 1 square meter / / Thickness: 3CM, 5CM;