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.
Bought a home with large sliding barn door and the original ground rollers were gone or not working. These work fantastic to secure the door from inside and still allow the door to slide open. They aren't really for security IMO but certainly keep the doors from being blown around by the wind