I have several, need to get some new pics though. I have two each racks based on three boxes.
First built were two based on the sterilite 1754 shoewbox tubs, 20 slots each. some pics:



Just recently built two 10 high racks around Iris CB 110, for some of my adults, very large tubs, the shelves are 20" x 40" and the tubs are not much smaller.
And lastly built two hatchling racks around the sterilite 4 1/2 quart boxes (don't remembre the number). These are pretty cool, they are each on roller bases, 6 wide by 8 high with counter tops. The two racks join together to make a 30" x 48" workbench in the middle of my room with a total of 96 slots for babies.
All of my racks are heated with flexwatt. Each shelf has it's own individual run with a plug. The thermostat shelf in each rack has a brown cord and is always plugged in while the other shelves have whiote cords and are only plugged as needed. I decided sometime back I would always have more slots than animals.
I use helix proportionals to control all the temps.
Oh yeah, get extra tubs when you build the racks, that way, even if the tubs become obsolete, you have spares. Also good for cleaning that extra soiled tub, you know the one where that durn snake smears waste all over the place. Simply swap out tubs and take the nasty one outside for hosing off.
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC)
0.2 kids (CBB)
LOL, to many snakes to list, last count:
10.22 BRB
10.15 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 