UNSKH R products are round formwork units. These are inserted into the floor sockets or cable duct assembly covers of screed-covered underfloor ducts and used as lost formwork for round installation units. They are made of sendzimir hot-dip galvanised sheet steel in accordance with DIN EN 10346, can be sanded, are heat-resistant and have internal level adjusters with levelling bases and covers. The formwork bodies are suitable for use in asphalt and terrazzo and are mounted on the raw concrete slab. They have VDE/TÜV approval and are 307 mm in diameter.