I use the same rubbermaid tubs with a similar concept. Watch for chew outs tho, I've had to cover two holes so far, but that was an easy fix with a small piece of hardware cloth and a hot glue gun.
How many rats to you keep in each tub?
1.1 Fire Ballz 1 Pastel
1 Mojave .1 Normal
.1 Pinstripe 2 Corns
.1 Jungle Corn .1 Pueblan Milk
.1 Rosy Boa 1 False Water Cobra
2 Painted Turtles 1 Stink Pot
1 Miniature Pinscher http://www.youtube.com/1980norcal