Box in reinforced fiberglass for 3 calves from 2 to 6 months of age, with large side-sliding aeration window in the back and a lifting hook . Upon request it can be supplied along with a metal fencing in deep hot galvanized steel and a removable front gate, 3 water-bucket holders and 3 nipple-bucket holders , a hay rack, a fiberglass feeder and a rainproof protection over the buckets.