rat birthing rack/mouse rack

Hi, I was wondering if anyone has a good blueprint for building a rat birthing rack/mouse rack or could point me in the right direction?

Thanks

They are very simple to build. You can simply YouTube "build rat rack". Watch a few different videos and sit down and start planning :)! Pencil and paper

not a birthing bin, but rodentracks.com has a few builds that you can then apply the same design to whatever size and shape bins you want... just change the measurements accordingly

I used these plans, with the support from the bottom method, and am very happy with how it turned out! Total cost was about $120 including the water system.

http://www.arbreptiles.com/cages/rat_rack/ratrack.shtml