Fully opening rooflight for flat roof

[bmj1]

Hi all,

 

So I'm all pleased with our velux CVU units..

 

.. But, it's been pointed out to me that we need access to the roof, and they don't open fully.

 

Any recommendations for a rooflight to fill an opening 120cm x 90cm, that opens fully?

 

Ideally not made of plastic, triple glazed and with option for built in motorised black out blinds.

 

Thank you in advance.