Siderise 23mm Soundproofing with Polymeric Barrier & White Cloth (x1)The Slimslab is a 23mm thick version of the Siderise marine soundproofing range. It is the thinnest we offer, so is ideal when space is limited, whilst still typically reducing sound by 23dB @ 500Hz. We have chosen the best quality materials for our sound insulation range to ensure they perform to the highest standards, making them suitable for use in engine rooms as well as other areas in the boat. Each soundproofing sheet is comprised of various