Neff Combi Oven installation - mystery plastic

[Coolhurst]

I’m swapping out our old Neff Combi oven/microwave for exactly the same model. One thing that’s puzzling me is a plastic sticker covering what looks like a vent on the top surface. Our old appliance doesn’t have this yet the symbols on the sticker suggests we leave it in position. Anyone know if we should remove it before installing? Nothing mentioned in the instal guide. TIA.

 

[Gasguru]

Just my guess but perhaps it's a pressure relief valve...do the rubber edges lift up? Say someone failed to use the cooker correctly and cooked a sealed vessel..it might prevent the door glass shattering.

 

[Mottie]

Looks like the sticker on your old one has been removed?