Pleasently supprised, for the money this is a good low security barrier. I will update the center flimsy lock as a big screw driver could break it. Not sure why there are wheels on the wall mounting ends, as they perform no function. IMO great value for my needs. The wider the opening the larger the gap at the bottom, OK for me as my dog has access to the yard. The picture in the sales does infer a more secure version. When installed and fully extended the gaps are quite large