The prison combination units with integrated an WC and washbasin with a range of water controls and cisterns have been installed in over 100 prisons worldwide in secure washrooms, prisons, police stations and custody areas.. The prison units are made of 1.5 mm thick stainless steel and prevent the user from concealing drugs, dismantling or tampering the unit and have several anti-ligature features. Special product designs to suit the installation requirements are available..