Capel C2216 Oven – Inner door glass

Hi,

I’ve just had a call from a customer telling me her inner door glass is coming away from the metal inner door on her oven. Capel C2216.

I’ve just had a look at the wholesalers and they actually list an inner door and an inner glass but not together.
Does anybody know how the inner glass fits. I just presumed it was factory fitted with silicone but obviously not if they sell it separately. Its dropping inwards at the top.

Any help would be appreciated.

Cheers
Nick