>In most common version a series of "rings" stack on top 
>of blower unit. Air is typically sent up outside and 
>passes across trays into middle. drying tray contents as 
>it goes, then vents up middle. NZ made "Harvest Maid" now 
>"EziDri" seems the market leader here, well known in 
>Australia, and some sold in US. Appear on ebay even. Some 
>US brands have trays which fit NZ made dehydrators and I 
>THINK the NZ version came first.

We brought one of those with us when we moved to the UK.
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