HHL570 FlexBox, complete installation set for flat shower trays made of steel enamel, stone, acrylic, mineral casting.... with drain opening 90mm. Included in delivery: drain body including cover lot, 3 mounting brackets and positioning template, sealing set with integrated Flex element (blue), without stainless steel cover, outlet with installation key and siphon insert. Installation: The main drain body is embedded into the screed and then connected to the sealing by means of the sealing set. The flat shower tray lying on top of it is connected tightly to the flex element of the sealing set via the outlet by snapping it into place. The flex element ensures that lateral deviations of up to 40mm (plus/minus 20mm from the center) between the shell component and the shower tray can be accommodated without any problems. According to ├ľNORM B 3407 barrier free installation is possible (threshold up to 20mm).