Buying light bulbs is not easy these days. Everything is here! We have very carefully identified all SKUs and other descriptive information of the old lamp. It wasn't enough. We had to physically measure the dimensions of the old lightbulb as identification was ambiguous. Fortunately, replacement lamp specifications include the lamp's dimensions; This was the deciding factor in our final choice. We were still not 100% sure we ordered the right bulbs! We guessed right. This whole industry needs standardization. I will only say. By the way; It's hard to rate a product whose primary function, after fit and functionality, is durability! So far, so good.