Pets love fresh, flowing water. The Petmate ultra-quiet Fresh Flow purifying pet fountain for large dogs provides naturally cool, flowing water your pet will love. This gentle fountain sends water down a smooth sloping ramp into the bowl with no splash or bubbles. And the 50 oz. capacity of the unit will satisfy a lot of thirsty dogs and cats before needing to be refilled. Flows with Safe, Filtered Water The Petmate Fresh Flow features include a reservoir that adds water automatically as the pet drinks and two replaceable charcoal filters that remove impurities and debris. Each filter will last 30 days, depending on how many pets are using the Fresh Flow. Water is moved through the unit by a whisper-quiet AC submersible pump. Unplugs for Easy Refills The pump easily plugs into an AC wall adapter for convenient disconnection during refills. The 50 oz. Fresh Flow assembles easily with no tools in minutes and measures 14.1”x10.1”x7.7”. On year limited warranty.