ander Alu Standard EPS 300 boards are used as a supporting element for underfloor heating pipes in drywall construction. The physical properties of EPS 300 polystyrene ensure that the product provides optimal thermal and acoustic insulation for the system . The aluminum foil veneer acts as a heat sink, absorbing heat from the pipe's sidewall and distributing it evenly across the board's surface. The straight element is used for running pipes straight and for meandering them along the building's walls.