This shower pan measured about 60 x 36. We use 1/4 inch lath strips to create a template of the pan which allows us to easily cut multiple pieces at once. Before we lay the tiles in with thinset a dry fit is done to ensure a perfect fit all around. The benefits to doing this it makes the process much faster because after we mix thinset we lay all the tiles in at once instead of cutting as we go. If you haven’t tried this before it is a great method. The drain is a schluter tileable insert drain.