Deadening kit for speakers, a set of sound absorption, vibration damping, and soundproofing materials. - Model: item No2441 - Item Type: Deadening Kit - Compatibility: For speakers - Set Contents: Sound absorption material, vibration damping material, soundproofing material - Instruction Manual: Included - New, unused, unopened I purchased this several years ago but have no plans to use it, so I'm selling it. Thank you for looking.