SPW18 - SPILLWAY 18 CAL: SPW18 - SPILLWAY 18 $80.25 SKU: CALSPW18 QTY: Click here to save 5% off of your order! CalPump - 18 Waterfall Spillway  Features: Create a quick and easy waterfall effect with our new Spillways. Our Spillways are available in three different sizes, a 10, 14, and 18. All of the Spillways include filter media to condition the water for a smooth waterfall effect.   Benefits: No digging Required Create a smooth or turbulent effect Filter media included   Specifics:   Intake: 1 or 1-1/2 MPT Dimensions: 10.5H x 11D x 19W Opening: 18 Wide Recommended Pump Size: 2000 GPH Maximum Flow Rate: 4000 GPH