I want to build a perspex enclosure for my Duplicator i3, and was after a few tips.

I have seen a few built using brackets to attach the sheets to each other, rather then gluing, and was wondering what the advantage/disadvantage of both methods are?

I was also wondering if there was a consensus on where best to place intake and exhaust ports?

And finally if there was an off the shelf kit I could use as a basis of my design (or just buy)?