10Pcs Black Bass Trap Acoustic Foam 20x20x30cm Corner Low Frequency Sound Absorbing Panel for Recording Studio Guitar PianoRoom

High‑density corner bass trap foam, specially absorbs low‑frequency sound waves, reduces standing waves and resonance, solves subwoofer booming, muffled vocal and muddy instrument bass issues.10‑pack size 20×20×30cm black acoustic foam, perfect for wall corner filling, ideal for recording studios, guitar, piano and music equipment rooms.Compressed vacuum packaging. Foam will fully rebound within 24‑48 hours after opening the package.Adhesive glue is NOT included; mounting glue needs to be prepared by buyer for installation.Lightweight practical acoustic treatment foam, improves overall sound clarity for home and small‑size music spaces.