Yes, and if a person is concerned that the rimless tank won't stay together with an 18"x4" strip of glass bracing siliconed against the top inside edge, they can instead use an acrylic piece that has been molded into a bracket with hooked ends that wrap over the outside edges.
Metal brackets secure the "hang on the wall picture aquarium" at my Dentists Office. It's a rimless tank 36"x4.5"x20". A brushed metal picture frame hides the three metal brackets, which may be a little over cautious, at the top center and on each upper side. (the previous tank did split apart after many years, thus the over engineering)
Here it is a few months later.
Without the Macroalgae, this little tank would be practically impossible.
A few years later, still holding together, no worries:
Aloha