The Coronado is a sloped sandstone rock with water flowing from the single 3/4" outlet off a raised ledge, use with pondless kit 24R02001 or 24C02001. (Rock Dimensions 16" x 12" x 8") 
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Tower Falls (13") are 8 individual stones that are stacked to create multiple levels of waterfalls, use with pondless kit 24R06001 or 24C06001. (Rock Dimensions 14" x 14" x 13") 
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Tower Falls (8") is a 5 individual stones that are stacked to create multiple levels of waterfalls, use with pondless kit 24R02001 or 24C02001. (Rock Dimensions 14" x 14" x 8") 
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Towers Falls (13") is 8 individual stones that are stacked to create multiple levels of waterfalls, use with pondless kit 24R06001 or 24C06001. (Rock Dimensions 14" x 14" x 13") 
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Tower Falls (8") is 5 individual stones that are stacked to create multiple levels of waterfalls, use with pondless kit 24R02001 or 24C02001. (Rock Dimensions 14" x 14" x 8") 
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