It looks just like a giant form of the best-selling children’s toy. It’s not just a colorful wall radiator design - in terms of function, the LEGO radiator is actually thermally efficient as the round raised areas of the radiator helps dissipate the heat quickly.
Each coloured block can be snapped together with others as it comes with a double connection - one for the plumbing and the other for a physical connection. You get to “play” with mixing and matching the colours just like the real LEGO blocks! - Via