I'm contemplating having horses at home again. It's been about 5 years since I switched to full care boarding. Before I bring them home I'd like to do some improvements with my current setup and add two boxstalls inside my barn. Looking at the prefab ones you can buy my husband who is a descent welder wants to build them himself. The floor will be concreted in the barn and we would like to not have to put in posts if possible. Has anyone built their own stand alone boxstalls? Tips, suggestions? Thanks.