We left the 90 degree lip off for 2 reasons:
1: It is more expensive to make when the edge is turned.
2: We left it straight so the rubber seal would be easier to place on the edge. I should have shown a picture of the rubber seal. I'll do that. Also, in case some one has a very tall motor and a short hood, you can trim the straight edge quite easily to fit your hood for a good seal.
David
