Product Description [Please confirm before purchasing]: The item dimensions of this 3.5 liters water filter jug are: 25.4cm*13.5cm*26.4cm (10.0*5.3*10.4 inches), please kindly check whether it could be put in your refrigerator door. If this jug is too big for your refrigerator door, we also provide the 2.5L water jugs, the dimensions are: 24.4cm*10.4cm*25.4cm (9.6*4.1*10.0 inches), please search the model: WD-PT-05. Thank you for your interest in Waterdrop. [Exceptional quality]: This Jug use the Filter “ WD-PF-01A Plus” NOT brita maxtra. Waterdrop jug is made of high-grade BPA-free plastic and has an natural wooden handle, which makes for easy handling. Because the pitcher uses activated carbon and highly efficient ACF from Japan, you can rest assured that you will enjoy optimal performance. [Certified filtration]: The jug is NSF 42 certified for the reduction of chlorine, taste and odor. It is also NSF 372 certified. Multi-stage water filter technology. Drink more water everyday with Waterdrop. [Long-lasting life without risk]: The high-quality filter produce more than 200 gallons (757 liters) of water before they need to be replaced. One Waterdrop Chubby water filter jug can replace more than 1,600 standard 16-ounce water bottles, thereby helping to save money and protect our environment. Also, our filters can be used in longer time that’s means you can avoid the trouble of replacing the filter element every month. [Dedicated filtration performance]: The main purpose of this Waterdrop filter is not TDS removal. “TDS” stands for “total dissolved solids,” which are basically inorganic salts and a small amount of organic matter. This filter can reduce harmful substances while retaining beneficial calcium and magnesium, which are the main components of inorganic salts. If you want to physically remove TDS, your best option is the Waterdrop RO system. 1: Soak the filter cartridge to activate it. 2: Hand-wash pitcher. 3: Install and clean the filter cartridge. 4: Reset the filter life indicator. What’s in the box?Water filter jug and four filter. If you have any questions about the product, or encounter other problems after purchase, please write to us, we will provide you with help in the first time.