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.
This product is a little too long and too thick to fit in the current ballast. I purchased LED replacement bulbs from a different vendor and they fit perfectly. F13T5 is a standard spec but this product does not meet it.