I purchased 6 of these shoe rack, when I assembled the first rack I realized the divider was too narrow for my heels, I had to improvised since I had a great need for 
These to accommodate my shoes which I did but it was an inconvenience because I ended up removing the middle shelf it worked but since I had to put it up myself 
I only put up 4. Check out the photos. This will work for flats sneakers any shoes without height.