1). Very easy to install, 2 people can finish one unit within 30 mins. 2). Light weight, only 85 kg,can be carried by 2 people easily. 3). Separable hand wash can be took out to use. 4). With flap, can not see the waste directly. 5). The material is with UV-resistant. 6). Warranty: 1 year for pumps and 6 years for other parts.