It is a waterstop type with an empty base, and a gap designed in the middle for expansion . Placed on the concrete outer surface. It has vertical tabs and striped surface on both sides of the tape to extend the water path and increase the water tightness. Produced in three different widths (240, 320, 500 mm). They are named DA240, DA320 and DA500.

It is a waterstop type with an empty base, and a gap designed in the middle for expansion . Placed on the concrete outer surface. It has vertical tabs and striped surface on both sides of the tape to extend the water path and increase the water tightness. Produced in three different widths (240, 320, 500 mm). They are named DA240, DA320 and DA500.