Sound Dampening Material Features AB-1672-DB PLUS DOOR KIT 12 SQ FT => $79.90 AB-2585-DB PLUS TRUNK KIT 20 SQ FT => $139.90 AB-4653-DB PLUS BULK KIT 36 SQ FT => $ 238.00 AB-5500-DB PLUS MEGA BULK 48 SQ FT => $278.00