I bought ten of these lights. They seem to be of good build quality. However, they are not particularly installation friendly. First, in addition to removing the light cover (no problems), you have to undo the wiring clip in order to access the installation holes. There is no template provided for installation (or any instruction booklet for that matter), and despite making up a template they are quite hard to get level because of small variances in manufacturing. I've installed the rear component level, but you add on the front cover and they change a bit. There is also a very poorly designed seal to go between the light and the mounting surface to increase water protection. It is almost impossible to use. It doesn't adhere to the light at all, and you are left trying to hold an ill-fitting seal on whilst stuffing about with trying to mount the light. I can't comment on longevity, yet, but overall these issues don't make it a 5-star product.