The Cal Pump spillway makes it possible to create a quick and easy waterfall effect. U.S.A. Max. Width (in.): 14, Includes: Filter media, Fitting Size (in.): 1, 1 1/2 Create a quick and easy waterfall effect Spillway includes filter media to condition water Filter media can be adjusted to create a smooth or turbulent effect Easy installation; no digging required Choice of 1in. or 1 1/2in. fitting