The AquaTru Carafe AT100 Reverse Osmosis Filter Stage 3 10AT100RF01 is a white water filter designed specifically for the AquaTru brand. It is lightweight at 0.8 lb and compact with dimensions of 2.4 x 7.8 x 3 inches. The filter uses a sediment filtration method to remove contaminants like lead, featuring a twist-and-lock design for easy installation. This pack includes 1 filter, making it a convenient and essential addition to any kitchen for clean and safe drinking water.