Window Black Sand ArtThe Window series is an original moving sand art classic since 1998. The KB Collection Window Black Moving Sand Art is made of beech wood and finished with black matte lacquer with coated steel posts. The sand is the Sandmans classic sand blend, White, Ash, Ruby and gold glitter. The Window series is an elegant addition to the KB Collection. This design allows you to have a see through window look and rotate the sand picture with out picking it up.