The furthest are raiseup racks for mice. Each cage holds fifty mice, and two weeks of food, auto water, and auto drain off, in case the water nipples leak. Heck if they leak, I don't even lose a pinky.
The closer ones are breeding cages, there are 32 cages to a rack, each holds 1.7 to 1.9 depending on temps(time of year). Each rack is 30 inches by 28 inches, is on wheels and can be moved about the room with disconnecting the water. Each rack holds about 250 females. Also two weeks of food and auto water and drainoff. They are slide outs and you do not have to remove them from the rack, or you can, no problem. They are front feeders, no need to feed from the back.
Of course, these are of my own design and are suited for what I do here. At this time I am producing about 3000 sellable mice a week and feed all my animals and my sons(he doesn't help, the punk)
But wait, theres more for next time. FR