To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
It works, somewhat for what I needed it for, but, the rubber piece could be alot sturdier (thicker) or wider, I don't see this lasting very long. Using for my shower door and the rubber is so thin it slips when I get to the edges.