The WISA 550 White is a low reservoir for a universal toilet cistern. The WISA 550 has a depth of only 106 mm. Therefore, when the toilet bowl is positioned close to the wall, this reservoir remains hidden beneath the toilet seat cover. It features a flush mechanism that uses no more water than necessary. The flush volume can be adjusted from 9 liters to 6 liters. The reservoir has a double wall to prevent condensation and is designed to accommodate a hydraulic float valve and a water connection of 3/8 on the left or right.