As far as I can tell from the website, they are 2-sided only.

J

Wouter van Ooijen wrote:
>>I'd love to make a panel of different 4-layer designs.
>>Are there any boardhouses that do this?  Basically, a barebonespcb.com
>>for 4-layers.
>
>
> did you check www.olimex.com?
>
> Wouter van Ooijen
>

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