Quarter-Round Corner Shelf for Shower Soap and Shampoo

This is a shelf for holding a bar of soap, bottles of shampoo and conditioner, and any other items which need to be accessible while taking a shower. It mounts into one of the corners of the shower stall walls, with the assumption that the walls are flat, vertical, and have a 90-degree angle between them. It can be mounted with either 4 or 6 shelf brackets which can be stuck to the walls with glue or double-sided sticky foam tape. The shelf has a 3mm rim on the top of its round outer edge to