I have not used this product or brand, but this maybe able to help you move in the right direction.

http://www.airkinglimited.com/page/professional-range-hoods-heat.html

P1836W Air King 36" Professional Range Hood with Heat Lamps - Stainless Steel

Venting or non? What size, and do you mean cabinet CLAD or under the cabinet? A warming drawer would be more effective.......... : ) at holding food to a desirable temperature.

Has anyone found benefit in these? They are a considerable distance from anything placed on top of the range. Stuff on a back shelf is closer and of more benefit but that can be a bit of a pain reaching across whatever is on the range. I've never known anyone who had them that wanted them again. They also reduce the capture area and containment area of the hood and so reduce its effectiveness.

These are about $50 and get a lot more heat a lot closer to the food. Can be a bit of a pain to store though:

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I had a Vent-A-Hood with a backsplash/flip down racks/heat lamp option. It was great. I didn't need a warming drawer.

I just checked at the Vent-A-Hood website, they still make them. It's one of the options.

I have a ceiling mounted heat lamp in the bathroom that was installed about ten years ago. I never use. As soon as it starts to heat up the blower attached to keep it cool comes on and creates an uncomfortable draft.