This acoustic foam comes in 24 tiles that are 1 inch in depth with a height and width of 1 foot. The depth of this foam at 1 inch provides better soundproofing over large areas. Thin foam, over a large area, has less of a chance of distorted and muffling the sounds reverberation. The uniform wedge design help trap airborne noise while alleviating flutter and slap back. This foam is Perfect for spot-treating production studios, practice rooms or home entertainment centers. Also, this foam helps with smaller agitation complications. It is tested to effectively sound waves and flutter. Purchasing your own foam is the to tune your area without hiring a professional acoustician. Foam not deteriorate or fall apart over time. All that is required is dusting over long periods of time. 48 Panels come in a Package of Uncompressed Acoustic Foam Good for studios, recording studios, vocal booths, control rooms Very Good High Product Care: Occasional Vacuuming of Dust colour: Black Material: foam Package Contents: 48 Pack- Acoustic Panels Studio Foam Wedges Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.