Blue Thumb (formerly PondBuilder) Elite Pump Canyons are indestructible one-piece molded pump wells that can accommodate large pumps up to 20,000gph. Pumps are both easily accessible and well-protected within the canyon. Octagonal design brings strength and prevents distortion Built to withstand pressure of being buried under rock Spin-weld makes installation of auto-fill valve easy Snap-on lid secures canyon Great for pond-less applications Model Mini Pump Canyon Small Pump Canyon Large Pump Canyon* SKU PB1366 PB1168 PB1175 Maximum Flow Rate 2,500gph 7,500gph 20,000gph Dimensions 12.25" x 14" x 16" 15.5" x 18" x 22.5" 24" x 27.75" x 31.5" Outlet 1.5" Flex Hose 2" Flex Hose Spin-Weld No Yes Yes *Ships by truck freight, which requires that you be present at time of delivery. Freight company will call to schedule an appointment.