For this certain model, they’re located behind the wax seal. This can make it tricky to tighten the bolts by conventional means. It can be done, but it may well need a several extra hands. The seamless design with the toilet does make items trickier in the course of installation. https://merlyn-shower-enclosures14348.wssblogs.com/32264108/a-simple-key-for-small-shower-tray-unveiled