Easy to Install - Our soundproof wall panels comes with -adhesive, tear off the double-sided tape on the back and it immediately. Save your time and money. Please press firmly after sticking to the wall to prevent falling off. Perfect for professional studios, video blogger,rehearsal rooms, concert , podcasting, school,home theaters, offices, pet kennels,etc. -adhesive acoustic panels are lightweight and can be installed to a variety of different surfaces (walls,doors,windows,ceilings and so on) without any .The -adhesive acoustic foam is also easy to cut to size, altering won' affect acoustic foam's performance. High quality Materials: Our sound absorbing foam panels crafted from fire-retardant and - material, it is safe to in small and medium-sized rooms. High quality panels for better sound absorption, Reduce waves, reverb and flutter echoes in smaller to medium sized rooms. Installation : It is recommended to stick the tape to the four corners and the center of the back of the acoustic foam panels, and then to the wall. Or you can purchase spray glue to install the soundproofing foam according to your needs. color:Black + gray Material:Polyurethane Package Contents: 12 x Acoustic Foam Board Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.