Be confident in your purchase we're an Authorized Coral RX Dealer. How cool is that?!?!? Specs: Volume: 2.0 liter compartment Dimensions: 4.5 in. x 4.8 in. x 8.5 in.114 mm x 121 mm x 217 mm Features: Keeps Dosing Chemicals Clean: Our tight-fitting lid is designed to stay in place without creating a vacuum. High Capacity: Each individual high capacity compartment holds two liters (2L). Strong Hose Ports: Hose connections are made from PVC to reduce breakage and to ensure tubing stays in place. Imperial and Metric Ready: Easy to read graduations in both ounces and milliliters. The Simplicity 2L Modular Dosing Container's 2-liter modular design allows you connect multiple units together to suit your unique dosing needs. The clear acrylic is marked with measurements in both milliliters and ounces, making it easy to check your remaining solution.