I am an electrical contractor and have relied on the specifications provided to install this product. specified in the description. This is clearly not the same driver, and it is much larger than the one shown in the photo. Second, the description says it can be installed in a 2 inch deep cavity. NOT CORRECT! I reckon you need at least 5-6 inches or the driver won't slip through the hole you drilled. You may be able to fit in a 2" cavity if you have rear access, but then it's not a cavity. , it would be open at the back. I am disappointed in this product and its inability to provide instructions for people trying to plan their installation before purchasing.