Check the listing for details. Practical Double Layers Soundproofing Foam Egg Crate Acoustic Sound Absorbing. Condition: Open box. Listed at 8.29 USD. Practical Double Layers Soundproofing Foam Egg Crate Acoustic Sound Absorbing DESCRIPTION: Scope of applicationIdeal for use in recording studios, home theatres and karaoke room, broadcast studios, computer rooms, equipment enclosures/rooms, gymnasiums, gun Ranges.Double layersThe high rebound soundproofing foam is consist of two layers. One is low density part and the other is high density part. Two layers together stop the noise effectively with the foam cell structure for maximum noise absorption.Safe and healthy2cm thickness soundproofing foam is the eco-friendly product, without CFC, HFC, formaldehyde, etc. No chlorofluoro compound, the soundproofing foam reaches country standard.WaterproofThe soundproofing foam does not absorb any water because the fine independent foam structure. So the place which is attached with the foam will not get damp.Strong flame retardancyThe foam can stop firing when it get away with the firing stuff. The level is country B1 class.Adhesive back stickerThe strong adhesive back sticker is stable and reliable. It even can bearing heavy stuff, such as brick. Specification:Type: soundproofing foamQuantity: 1pc