11Watt 4"- Inch ENERGY STAR UL-Listed…

Is it two to a pack?

It is a single.

I built a photo booth using these for my wedding (and to hopefully rent out later), or one of the identical ones on Amazon under another name. They all work pretty great. I wired 4 into a dimmer so I could vary the lighting based upon how bright/dark the ambient light is. I looked at getting lamp cords and just screwing them in as shown in the pictures but I ended up just cutting and using wire nuts for a cleaner/cheaper approach. If I were replacing old can fixtures I’d consider these.