Package Included: 1 x RO Water Filter Description: x Provide pure water for your daily drinking. x Protect your home, health and appliances by filtering water. x Five specifications to choose from: 50GPD, 75GPD, 100GPD, 125GPD, 400GPD. x Perfectly suitable for use in RO systems. > x Removes up to 99.99% of heavy metals, total dissolved solids (TDS), bacteria, arsenic, chlorine, cadmium, pyrogens, Giardia, viruses, cyanide, etc. x High quality and better filtration.< br>Specification: Color: Blue Type: 50GPD, 75GPD, 100GPD, 125GPD, 400GPD Size: 300x60mm Weight: 233g Model Description: xFor example: Model:1812-75--g br>18 is 1.8 inches in diameter, 1 inch is 2.54 centimeters.< br>12 is 12 inches long, and the total length of the film is about 29.7 centimeters. 75g is the water yield, 1g is 3.785 liters. 75g is 24 hours of water output. 75x3.785 is the total amount of water produced in one day.