The waste is partly under the floor level,you have to leave space for the waste and pipe to run in the floor,so you can not install the tray on a concrete floor,but you can buy the riser kits to get it sorted.
Aica 1400x900x30mm Slimline Rectangle Shower Enclosure Bathroom Tray Free Waste
Aica Luxury Quality 1950mm Frameless Sliding Shower Enclosure Door Safety Glass
800x800x30mm Slimline Shower Enclosure Walk In Quadrant Stone Tray
800x800x30mm Square Shower enclosure Stone Tray
Aica Slimline Rectangle/Square/Quadrant Shower Enclosure Stone Tray Free Waste
Aica Rectangle/Square/Quadrant Stone Shower Tray Free Waste
