Tile Rite XPS Foam 1mm LVT Underlay 9.62m21mm standard black underlay for lvt click flooring 20 boards per pack that fold out 1mm thick x 400mm wide x 1200mm long 9. 6 square metres per pack Gives excellent performance on all sub floors Is moisture resistant, is sound absorbent, levels and supports the flooring, has high traffic protection, is perfect for floor heating. Made in Britain & uses up to 100% recycled plastics. Features 1mm standard black underlay for lvt click flooring 20 boards