The item should really mark the toilet storage space (it will fit a 32" tall toilet with no issues but mine is more like 34" and the flush buttons are located in the center of the lid), though it marked the clearance from the floor to the bottom shelf but there is the horizontal bar below the bottom shelf really gave me a hard time. Also make sure it is in place before you install the lower bar, otherwise you will need to lift the whole thing. 

Overall I (a 7-month pregnant lady) was able to assembling by myself within 3 hours, but to move it in the right spot will require some assistance from others and to figure out how to make it fit if you have a tall toilet will take some thinking.  I am still glad that it is working!