The WATERDROP WD-RF10 Water Filter is a high-quality water purification system that is brand new and sealed in plastic. Designed by Waterdrop, this water filter is compatible with other Waterdrop models and is made of durable plastic material. It effectively removes impurities and contaminants from your tap water to provide clean and refreshing water for your home. Easy to install and use, the WATERDROP WD-RF10 Water Filter is a reliable and efficient appliance for maintaining the purity of your drinking water.