Lower part of the whirlpool bath consists of a greatly resistant monolithic bottom made of a toughened ABS plastic. In combination with a thermally isolating filling of the whole bottom of every whirlpool bath it works primarily as a transport case, prevents insect and rodents from entry and is superbly resistant to lower dampness and climatic changes.

Lifespan of this ABS cover is immeasurable as it represents a climatically indestructible and inert material. Tough supporting construcion, preventing deformations, assures inner stabilization. The plastic prevents the dampness to penetrate into the technological space and therefore forestalls mold formation and reproduction of bacteria.