I was looking for some birthing rack plans for approx 16-20 tubs. I currently use the small concrete tubs for the colony but lately Im having issues with moms fighting over pups and general disorder with the litters. I can figure out how to build the rack but need some help with what tubs/bins that will work without being able to chewed out and have a good lip that will work on rails. Below is my current setup. Thanks
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