How do you tell your new windows are A rated?

Eastender

Just had my rear windows double glazed. The glazing companytold me it’ll be A rated but the new windows don’t have any stickers to sayit’s A rated, unlike a Fridge for example, it could be C rated when I paid forA.

When the installerscame round and when I asked them, he pointed to a hologram sticker in the glasspanel, which says its advanced glass or something like that. It’s this supposedto like that?. It’s a Fensa registered company by the way.

The Glazing factory ordered the A rated glass fromanother supplier then manufactured the rest in their company, well at leastthat's what they told me. They said they can produce C rated glass in their ownfactory but for A rated glass they have to order from another supplier