The junction box is larger than the light meaning it won't fit through the designated hole cut for the light.
110v 220v 1W CREE chip led mini spot light dimmable downlight Recessed lamp Cupboard Showcase Display Light
I thought the lights would be more focal. Instead, they are wide projection. Not what I was looking for in my application. My fault for not researching well enough. I also did not realize I would have to wait for the item to leave China/customs, etc. Not a quick order. Nothing inherently wrong with the product, however.
The product is 180v-260v, which is not suitable to US standard 110V