Know the thickness of your floor
This is a great product for raising the height of your toilet.  Easy to install if your bathroom floor is of the "usual" thickness. Unfortunately my floor was too thick and fastener came up about 1.5" too short, and hardware stores do not stock longer fasteners.  I was caught between returning product or custom making  longer fasteners, which I did from threaded stock available in most hardware stores.  I highly recommend this product and highly recommend knowing the thickness of your floor so you may be prepared to implement my solution, or a better one you may think up.
Rating: 4 stars