We have a 117" inch opening and originally I thought that one gate and one extension kit would work.  However, the gate should only be extended to 72"--it needs to be accordion-style for the support.  So, I added a 2nd extension unit, removing one of the panels.  The attachment aligned and the items looks good and substantial---HOWEVER, it took our 10 lb. puppy less than two hours to figure out how to keep pushing on the unit until it toppled over or moved forward so he could reach our carpeting to chew on it....So overall, the gate looks good and sets up nicely, but if you have a mischievous pet, it may not be a 100% solution.  We now have 2 heavy chairs keeping the unit in place--at least until he grows bigger and can move them, as well.