As pondless water features and disappearing waterfalls continue to increase in popularity, Atlantic"s Echo Chamber Series fills a much needed role. Whether used in combination with a FastFalls unit in a run or as a stand-alone unit in a fountain application, an echo chamber not only serves as a collection basin for pumping, but also amplifies natural water sounds and enhances the aural beauty of your water feature.Features a self-supporting polyethylene receptacle and a steel grate cover. As water hits stone and small boulders on the grate and falls into the bottom, an echo is produced - adding a new dimension to the fast growing segment of disappearing waterfalls. Dimensions: 46"W x 29"D x 27"H Max Pump Flow: 10,000 gph Capacity: 100 gallons Grate: Polyethylene w/heavy-duty support bars or Galvanized SteelEcho Chambers FeaturesRugged HDPE or galvanized steel top grate for supporting gravel or stoneDeep basin accommodates pump and check valve assembly (pump and assembly sold separately)Drill-point areas accommodate autofill assembly (assembly sold separately)Rugged high-molecular weight polyethylene shell warranted for lifeDrill-point areas accommodate the addition of overflows, cleanout drains, and lighting (all sold separately)Modular design allows two or more Echos to be joined togetherAvailable:ATLECT250 - Echo Chamber Series Fountain Basin w/ Polyethylene GrateATLSEC250 - Echo Chamber Series Fountain Basin w/ Galvanized Steel Grate ATLSEC250- Echo Chamber w/ Galvanized Steel Grate