This in-wall cistern specially designed for our wall hung smart toilets and allows all the functions to work correctly as recommended by the Japanese style toilet manufacturer. With an air controlled dual flush cistern which is build into a strong metal frame with industry standard spaced mounting bolts to allow the toilet to securely hang from. Each cistern has a built in secondary water supply fed from the main cistern allowing easy and more economical installtion, plus a secondary air supply required for the automatic flushing function to work. Our Smart cisterns can be supplierd with a choice of real metal flush plated designs in the metal finishes of Chrome, Stainless Steel, Gold, Brass, Nickel, Black Chrome, Bronze, Antique Brass and Copper iwhich are also available in polished and brushed finishes.