For the screen, you can select a couple of chipboard panels with a thickness of up to 16 mm, or you can take moisture -resistant drywall — you need to select a small panel that corresponds to the small side of the frame in size. Need to prepare loops and metal clamps. A hole is cut in a large panel to create a viewing window, which will be used to control the pipes and the state of drain. Its value is calculated on the basis of what will be facing for the screen.