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Catalog: Main > Fountains > Atlantic Echo Chambers Echo Chambers SEC250 Echo Chambers SEC250 1  Product Options     Price: $997.14       Product Description   How Echo Chambers Work: As pondless water features and disappearing waterfalls continue to increase in popularity, Atlantic'Ss 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. Echo Chambers Feature: Rugged PVC or galvanized steel top grate for supporting gravel or stone. Deep basin accommodates pump and checkvalve assembly (pump and assembly sold separately.) Drill-point areas accommodate autofill assembly shown at right (assembly sold separately. Rugged high-molecular weight polyethylene shell warranted for life. Drill-point areas accommodate the addition of overflows, cleanout drains, and lighting (all sold separately) Model: SEC250 Max Pump Flow: 20,000 gph Bulkhead: 1-1/2"-3" Dimensions: 4' x 3' x 26" Grate: Galvanized steel