Professional Acoustic Foam White Egg Crate Panel Studio Soundproofing Foam Wall Panel 72" X 24" X 2.5" Convoluted Egg Crate foam Soundproofing Acoustic wall acoustic foam egg crate Wall Panel 72" X 24" X 2.5" Very Good Quality High NRC=1.37 NRC !! Perfect for studios, recording studios, vocal booths, control rooms.upholstery foam