Quadrant: Created with a curved front, quadrant trays fit snugly into corners to optimise bathroom space. The size with the silicone bead to get a shower tray depends on the joint or gap you have to seal. Commonly, a 5mm to 10mm bead is applied to ensure a suitable seal. https://showerrooms07434.blognody.com/33151090/indicators-on-black-toilet-roll-holder-you-should-know