Is there an easy way to build a removable wall between stalls so that they could be used as a foaling stall later?

With typical wood barn construction, an easy way to do this is to attach a "U" shaped galvanized metal channel to the inside of the posts where the wall will go. The metal should be 1 9/16 inches by 1 9/16 inches by 1 9/16 inches inside dimension to allow the 1 1/2 boards to be inserted into the channel from the top, and easily removed later. The thickness of the metal should be 14 gauge, and the edges should be gone over once or twice with a fine metal file to take off any sharp edges. This method of dividing wall installation makes it very easy to remove the boards later, and also eliminates any wooden corners that the horses may chew on.

Barn construction...