Vic I'm sorry this took so long. I have a child who is ill and sometimes he pulls me away from getting anything done for weeks. So I'm a bit behind...but here are the hood details:

First finished product from front and side:

And today I crawled up on the counter and took some more pics so you could see the guts and the top in it's finished product mode:

I wanted to show the inside and underside pics as well as the top so you could see the way the trim is formed on the base of the piece (the two lower pieces). The top is regular 3" crown, but these are 2 1/2 (actually it's in metric but that's close) and they're solid wood. You need that so you don't have a gap on the bottom edge and the top because if you did, there would be nothing much to hook it on with, and it would look ugly as well as collect dust and grime below.

The lip was added to the hood insert to give somewhere for the trim to sit on.

In one pic you can see tht the granite frame for the chickens extends into the hood. I did that because it was necessary to make a good frame and keep the chickens above the stove. My tile guy just had to shave them so they wouldn't be "Standing proud" out from the debth of the mosaic

The insert itself is just a regular old vent a hood, remade by my metal shop to fit the size of our stove. It's 27 x 58.

Th hood itself is constructed of marine plywood, then the top portion that has plaster on it is also covered in drywall, then plaster. The face was left wood to give me a nice surface for the granite to adhear to. The whole thing is attached to studs in the wall, and hung from the rafters on big chains. SIx guys did pull ups on it..it's not going anywhere!

This is a picture of it when it had just a start on the plaster and drywall was on the top:

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At this point, I broke my arm and had to hire a pro to finish the plaster :oP

And here it is all naked:

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The measurements are: 3" crown molding and 2 1/2" trim molding around the face top and bottom. The granite is 9" x 18" (left overs)

The top portion of the hood, from the ceiling to the end of the sloped area where the first of the trims is attached is 26" The very top flat area is 18 deep by 40 wide. The bottom is 27x 58 without the trim and 28 1/2 x 61ish with the trim measured in. Your slope is the natural slope from the 40 to the 58. THat flat area on the wood only portion of the hood shell was 12" tall.

Anything else???? I hope that helped.

Iggy