Manufactured from up to 75% recycled glass roll providing high levels of acoustic insulation in partitions, walls and floors to meet acoustic requirements in domestic and non-residential applications. The product carries a system lifetime performance guarantee, when used in British Gypsum SpecSure warranted drywall and floor systems. The rolls push-fit between 600mm stud centres making it easy to install. Can be used as either 1 x 600mm roll or split into 2x 300mm rolls