Compact dual flush syphon for 1 1/2" lever operated toilets. Split syphon easy to install and service. Light touch flush activation. Rapid height adjustment. Unique full and partial flush volume adjustability. WRAS approved. Fluidmaster Universal Dual Flush Ultra Syphon 7 1/2 - 9 1/2". Specifications: Dimensions: H:28.0 x W:17.0 x D:8.5 cm Model Number: 19467. This high quality, easy to fit Fluidmaster ultra dual flush syphon is suitable for use with close coupled toilets. It has a 4L or 6L flush to help you improve your water efficiency .