Desired specifications to be listed for food dehydrators

Here is the list of things I specifically look for in a food dehydrator. I'd love to see them all in one spot so I can more quickly evaluate it:

* tray dimensions
* heating element watts
* fan watts
* tray material (i.e. stainless steel)
* temperature range (in Fahrenheit)
* space between trays
* where the fan(s) are located
* a picture of the dehydrator and the trays with an average-sized person next to them for scale.
* timer length

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