Induction hob installation

We've bought a Samsung induction hob and the installation guide says we need to install an insulation panel between the oven and hob. I called Samsung to find out what this panel is and they said they would have to check with their specialist team as they didn't have further information as our kitchen fitting team would put the panel in!

Any idea what this insulation panel consists of as I can't find the info online and we need to get the hob fitted soon?