Interesting, I'll pass. Sounds like a year or two of refinement may be needed.
from Amazon...
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4.0 out of 5 starsYou might need to be fairly handy
BySnowman9000on January 4, 2016
Verified Purchase
I feel the instructions are a bit too generic and lacking in detail. They are selling this for $200; they could spend a bit more time on the instructions and use a few more pieces of paper so the photos are not postage stamp size.
I retrofitted to a late model Heng brand hood with sloped front. I had to drill out several spot welds to remove the old fan unit. Not a big deal but it's disconcerting because you feel like one wrong move and you might mess something up. But really, all the spot weld points are more or less hidden when the range hood is in place. Don't be in a panic to cut the above-hood wiring as instructed before getting the hood down and sitting on the stove top (cover with a thick towel or cardboard). There probably will be enough slack in the wire that you can look things over and think about where to cut. You might be able to remove wire nuts and not have to cut at all.
FOP provided a tin box to cover the under-hood wiring, but it sure wouldn't work on my Heng hood. Neither did the OEM wiring cover once the SAM unit was in place. I would have to so some serious tin-smithing to make something work. So for now, and probably forever, I bundled the wiring up out of sight and touch with zip ties.
I wouldn't use the FOP exterior grille if you paid me. It doesn't have enough overhang to prevent entry by a driving rain. The foam gasket they use instead of butyl tape is something I think will eventually disintegrate like most foam gaskets do. So I am sticking with my original exterior vent outlet. At some point I'll modify the flapper with a screen so it doesn't have to be opened.
All that said, the product is a major improvement over the ancient low tech OEM fan and light. Quiet and powerful fan. Good LED light, and a night light too! Once I get the flapper modified, all of my expectations will be met."
more reviews.... https://www.amazon.com/Fabulous-Operating-Products-SAM-1-81-Upgrade/dp/B00VAAQ3VE#Ask