Cellecta's XFLOOR insulation boards are up to 7x stronger than traditional soft expanded polystyrene (EPS) and typically 2 to 4 times stronger than PIR or phenolic boards. Their long term resistance to compression makes them ideal for a mulitude of resisdential, commerical, educational and healthcare underfloor heating applications. Product Features: Lenght - 2500mm Width - 600mm Thickness - 140mm Pack of 3 (4.5m2) For more detailed information and other sizes available that would benefit your specific project, please reach out to our experienced sales team.