Ideal Standard ProSys 120 M Wall-Mounted Concealed Dual Flush Built-In Cistern with SmartValve 126 x 490 x 425–645 mm

The Ideal Standard ProSys 120 M Built-In Tank (Model R0156) is a premium concealed cistern engineered for modern bathrooms where aesthetics and performance matter. Featuring dual-flush operation (4/2 L adjustable) for efficient water use and reliable mechanical actuation, this built-in tank is designed to fit within solid or dry wall constructions behind wall-hung or back-to-wall toilets. Its compact, low-depth profile makes it suitable for space-efficient installations while supporting a wide range of flush plate controls and components. Ideal for residential, hotel, office and commercial washrooms,

Key Features

• Built-in concealed cistern hidden within wall for sleek bathroom aesthetics.

• Dual-flush mechanical actuation adjustable between 4 L and 2 L volumes for water savings.

• SmartValve technology optimized water fill and delayed fill function for efficiency.

• Compact 120 mm depth ideal for slim wall cavities and space-saving installations.

• Neutral finish (code 67) integrates with any frame or wall system. 

• Compatible with a variety of flushplates (mechanical, pneumatic or electronic) with optional kits.

• Designed for residential, hotel, office, healthcare & high-traffic washrooms.