I have mine on a wire shelf wrack... I got it at lowes--
here. I also have loads of amaryllis bulbs growing there, too-- the orchids only get one shelf but it is four feet wide, 18 inches deep and I have a light fixture just above their leaves so they're getting plenty of light. The ones that are blooming are in the living room on a small table in the corner, sitting on humidity trays filled with water (they ARE touching the water as the pots are filled with hydroton balls-- the roots however, are not touching the water). The plants on the shelf are two 40W fluorescent bulbs keeping them going.