Type 7 takes its name from the seven-centimeter-high/2.8-inch planks that, thanks to the arrangement of the openings in the insert element, create a fence with a light joint. The 12-millimetre/0,5-inch. -high transparency is ideal as a design element, because different attractive light transmissions result depending on the position of the sun. The planks are made of natural Douglas fir wood from the Black Forest (Germany) and are therefore particularly sustainable.