Patent ID: 8186306

Claim:
A free-standing plastic indoor livestock confinement system, comprising a plurality of hollow plastic panels, each panel having a number of spaced tabs at its ends, with a first set of tabs at a first end and a second set of tabs at a second end, each set of tabs having at least one tab in a top portion of the end, at least one tab in an intermediate portion of the end, and at least one tab in a lower portion of the end, wherein the tabs of the first set are offset vertically from the tabs of the second set such that the first tabs of one panel fit vertically between the second tabs of another panel when the ends of the panels are put together, and wherein the tabs each have a hole so that a rod can be inserted vertically down through the tabs to lock the panels together, wherein the system includes at least one wall intersection where four panels come together, each said panel having an end at the intersection with tabs interfitting with the tabs of the other panels, and wherein the total number of tabs of the four panels at the intersection minus 1 and that number divided by 4 equals the number of tabs present at the intersection on each of three of the panels.