humidity tray
 

Hi I am wanting to set up a humidity tray for my orchids which are positioed
on a bench below a skylight in my bedroom. I need a tray about the size
35cm * 80cms to asccom approx 8-9 plants. Does anyone have any ideas on
what I can get to use about this size, I haven't noticed anything this big
in the garden centres.

Thanks.
Mark.