Technical specifications: Condition: new Model: ULP1812-75 The membrane at the temperature of 25 ° C, the water pressure was under the condition of 5.5 kg, 1 day (24 hours) produced 75 gallons of water (US 1 gallon = 3.778 liters). Circular formula: ring-wound Material: Membrane is a composite material Main Color: Blue Size: approx. 28.5 x 3.8 cm / 11.18 x 1.54 inches. Weight: approx. 207 g Package Includes: 2 x Reverse Osmosis Water Filter Element Note: 1. Please allow 1-2cm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated and the colour of the items displayed in the photos may be slightly different from the real object. Please take the real one as standard.