Hi, I have French Doors and have been told that I’m unable to have perfect fit venetian blinds due to the inner rim depth from pane to pvc edge is too ‘shallow ‘ at 15mm and it would have to have a sponge type filler to put in the gap all around ( sorry that’s the easiest way I can explain ) .Could you tell me if that would be the case with your Click Fit venetian blinds .I would like a white gloss finish venetian. I look forward to hearing from you. Thank you for your help, Regards Karen