The Doulton W9361122 Stainless Steel Gravity Filter System comes with two 7" SuperSterasyl Filters, providing you with everything that you need in order to have clean and potable drinking water. A plus point of this water filter is that it does not require electricity in order to filter water; all you have to do is simply pour the water in and let gravity do the work. Its superior performance makes it the ideal water filter for everyday use at home, camping or for disaster relief. It has a dimension of Assembled 8" x 19" / Stored 8" x 13.5". It can hold 2.25 gallons of filtered water.