The Rapid SL frame gives solid support to wall-mounted WCs as well as being easy to fit. So why would you need to install a support set for Rapid SL? If your customer’s choice of WC bowl has a bearing area of less than 200mm then the lower edge of the bowl will be above the Rapid SL’s lower crossbar, so not supported. Watch the short video to be clear on why you might need the support set and for a crystal-clear demonstration of how to fit it.