I originally thought these had a metal border when I purchased them but when I took them out of the box they did not. But I wouldn't fault the product for my oversight, and I really like the look now that they are installed. Also I could frame them at a later date with whatever material I choose. I chose not to use the installation kit that came with the mirrors and I mounted them using only liquid nails. Once I figured out what I was doing it wasn't any problem at all. Measured, used three small nails and tape to hold the mirrors to the wall, made sure they were level and left it for 24 hrs. Looks great to me.
Funny how all the photos from THD and the manufacturer don't show the screw clips provided for mounting. I prefer mirror adhesive for permanent applications like a bathroom mirror.
We added a new bathroom in a bonus room. Regular 1/4" glass mirrors are heavy, expensive, and chip far too easy. We thought this would be too thin, to sit on a backsplash (and, it is: it wants to slide behind when sitting flush to the wall.) However, once we blocked it up and glued it on the wall (Loctite PL530 mirror/marble/granite adhesive) the thinness (3mm) is visually perfect. Very happy and will buy this style again. Some complained of image distortion:
if your wall is reasonably flat, you won't have any distortion but if the wall warps, is cupped or bowed, the mirror is so thin it will follow the wall contour and you will notice some distortion from a distance.