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.
These hanging folders are for my U.S. Letter size (B4) file cabinet and are unobtainable in the UK. Fortunately Amazon can bring them over from Amazon.com at reasonable cost. They are well made and should last well.