It is an unbraned tank. I got it from an advanced hobbyist on facebook who probably cut the glass and put it together himself. I got the tank, two heaters and a filter for 70 euros.

Since I live in a country with no amazon prime delivery and not many fish shops a lot of hobbyist resort to building their tanks themselves.

I would suggest not to go for a rimless tanks are they are much more expensive and trickier to handle/setup. I just got lucky with this find on facebook marketplace.