... 2.Water-saving, 3.Adjustable for full flush volume 1. The height of the flush valve is 200mm(other specification: 220,260 ... available: 250mm.(other specification: 220, 280mm)3. Dual flush system, the full flush volume is adjustable, saving water.4. Working water pressure ... .8. Provide two bases for one-piece and two piece toilet.9. Easy installation like a DIY product.10. Highly adaptable ...