Concealed cisterns are a modern toilet flushing system that hides the cistern inside a wall or furniture unit, enhancing bathroom aesthetics and space efficiency. They are designed to integrate seamlessly with wall hung or back to wall toilets, providing a cleaner and more contemporary look. Key features include a compact design for space saving installation, ease of maintenance with accessible flush mechanisms, compatibility with various plumbing systems, water saving dual flush options and a sleek minimalist appearance that complements modern bathroom decor.