Arrowzoom Pyramid Self-Adhesive Acoustic Foam Tiles — Peel & Stick — Black x Gray Bundle - KK1034 Acoustic Pyramid Foam so there are no acoustic

so there are no acoustic ratings to quote — what matters is what it cuts and how the edge comes out:

STC 25-30 cuts conversation-level noise by roughly 50-60%

It can solve tight clearance issues with its very low thermal conductivity

4–2"  |  ~10–50 mm  (confirm on your variant) Material Acoustic foam (sound-absorbing) Acoustic role Absorption — reduces echo & in-room loudness Typical NRC range ~0

Step 5: Seal The Insulation Mat

Arrowzoom Pyramid Self-Adhesive Acoustic Foam Tiles — Peel & Stick — Black x Gray Bundle - KK1034 Acoustic Pyramid Foam so there are no acousticStick. Press. Quiet room. Most acoustic foam needs glue, spray adhesive, double sided tape, or a hardware store trip. The KK1034 doesn't. Each tile ships with a peel and stick adhesive backing built in pull the liner, press to the wall, done. A 12 pack covers a small room in under an hour. Real pyramid acoustic foam, real NRC absorption, no mess. Peel and stick backing no glue, no spray, no tape NRC 0. 74 average STC 27 kills echo from voice, music,