4 Pcs Acoustic Panels,48''X24''X2'' Egg Crate Foam Soundproof Foam Wall, Black ??Size?48x24x2 inch Egg Crate Acoustic Foam.Creating a beautiful recording environment for you. ??Environmental and Safety?These acoustic foam panels are Made of quality polyurethane High density flame-retardant foam material,odorless,non-toxic, fireproof, durable, efficient and safe to use and also passes flame retardancy requirements ??Ideal for Sound Recording and Video Recording?By increasing noise absorption properties inside the room will help to reduce noise transmission through the walls and thus reduce noise outside the room.professional acoustic control reduce waves, reverb and flutter echoes in smaller to medium sized rooms ??Expands Quickly? Our foam panels come compressed in a vacuum package and quickly recover to normal size, either by placing in a well ventilated place for about 24-48 hours or soaking the foam in water for one minute then wringing the water out and using a hair dryer or letting it air/sun dry ??100% Satisfaction Shopping?These soundproofing foam panels come with 2 pack black egg acoustic foam in the package,?Contact Seller? if you are not happy with the purchase or have any questions. Our Excellent customer service will leave you with no worries after you buy it