Alpine Windows

Hi all, I picked up the glass for two Alpine windows at Billing and am considering putting them into an 88" roof. I'd have to cut the 'holes' out but I think that's manageable. What I'd need to know is how far from the back edge does the window start and also how high out of the gutter should they be? Thanks in advance.....

Have you got the correct seal too, and do you know the additional over glass measurement reqd., it looks with the seal very close to gutter and inline with one of the tub hooks. I would have it so edge of seal is just above top of gutter to keep the wet out

Thanks @steve2286w, I haven't got the seals yet, long term project, but the glass is 5mm thick. I can see what you mean by being in line with the 'tub hook' and then keeping it out of the gutter. I'll play around with those measurements and see what it looks like.....