The Fiberstars Fiber Optic Rain Waterfall is a unique 18” fiber waterfall that adds nighttime excitement to any pool. The Rain Waterfall comes complete with fiber pre-attached and is designed to provide single rows of water that are projected away from the falls lip at a 45 degree angle. The minimum water flow is between 5 and 8 GPM. Increasing the GPM flow rate causes the “rain” to fall further out from the wall on the pool. Specifications: 18” Rain Waterfall with 45’ of 36 strand fiber, Adds nighttime excitement to pool, Brightening shield, Easy to install