The Geberit DuofixBasic UP100 Delta is a concealed wall-mounted cistern designed for installation behind wall-hung toilets. This steel construction has a height of 112 cm and a width of 50 cm with a depth of 12 cm for space-saving installation. The blue water reservoir provides reliable water supply for toilet flushing systems. Built for durability, this flush-mounted cistern includes integrated wall anchors for secure mounting and stable performance. The UP100 Delta model is the successor to earlier Geberit flush-mounted cisterns and upholds the brand's reputation for high-quality sanitary components. Suitable for residential and commercial applications, this concealed cistern system allows for clean, minimalist bathroom designs by hiding the cistern within the wall structure. The steel construction ensures long-term reliability and resistance to moisture. Installation requires professional plumbing expertise for proper integration with wall-hung toilet bowls and water connections. The product meets standard plumbing specifications for flush-mounted toilet systems in modern bathroom installations.