"Wet" hollow floor system made of Knauf floor screed FE 80 Allegro, Knauf Schrenzlage and Knauf formwork elements on hollow floor supports. The Knauf Hollow Floor System Camillo is a hollow floor tested according to DIN EN 13213. It serves as an installation floor with a cavity height of up to 20 cm. Depending on the design, it meets the requirements of load class 2 or 3.