51 Instal lation Systems (Concealed cisterns for back-to-wal l WCs) Content Required Ideal solution for height restricted areas Ideal solution for areas with restricted space 1. Basic Tank L 2. Basic Tank Compact (under window) 740 Compatible Operating Panels 480 Compatible Operating Panels 357 PL1 PL2 PL3 Plate L1 Plate L2 830 PL4 PL5 PL6 Due to manufacturing processes all dimensions are approximate. Dimensions in mm The information in this section is intended as a guide to help you decide on the best products for your space and budget. It is not intended to be a substitute for guidance from bathroom professionals so it is always wise to check that the products you like are suitable for your installation.