Description:Size: 47" length x 24" width large size acoustic panels, can cover larger space of wall with 1 piece, reduce gaps between multi panels to create a beautiful effect. Comes with 3 hook tape and 1 masking tape, convenient for installation.Sound Proofing Panel for Walls: Made of polyester fiber, which has the characteristic of good sound absorption and noise reduction, corrosion resistance, non-absorbent.Special Design Surface: The special and decorative slotting surface design can reduce indoor reverberation, echo, standing wave and noise, creating a beautiful wall decoration for any room that needs lower sounds.Easy to Install: 1. Stick the masking tape on the wall to protect the wall, and cut to the length you need, stick 3 or 4 masking tapes for more stable support. 2.