These self-adhesive acoustic panels are designed to reduce echo and reverberation in homes, offices, studios, theaters, and other shared spaces. Made from high-density polyester fiber, they offer reliable mid- to high-frequency sound absorption while maintaining a clean, modern look. The 3M self-adhesive backing allows for quick installation without tools or drilling. Their 45° bevel edge design helps create a seamless appearance, and the material can be cut for custom layouts. This 18-piece set provides flexible coverage for both full-room treatment and targeted sound control.