I had a stand-alone \"Safety toilet seat\". It just took up too much space in my small bathroom. I knew this would be a better solution. I spent almost an hour getting it right. Putting it together, taking it apart, putting it together again. There is only one way to assemble it to make it fit perfectly and work perfectly. If it's assembled wrong, then it will be too wide, too narrow, or not attached to the toilet, etc. It's a quality product, but I think the pieces should be labeled (1,2,3,4,5,6,7) or (a,b,c,d,e,f,g) Those seven tubes turn into one continuous tube. But some of the pieces need to be on the left and right side. Once the pieces of the puzzle are where they belong it is a quality product.