Le Maitre Prostage II 10 x 15' VS Waterfall (Box of 10) - code PP1352A, The Le Maitre Prostage II 10 x 15' Virtually Smokeless Waterfall features a plume of silver sparks which gently flow down from above, resembling a classic waterfall. Holes are located at the bottom of the tubes for suspending on a cable/truss. The first number shows the burn time (in seconds) and the second number shows the height (in feet). The height is defined as the top of the main plume, some sparks will go higher. For example: a 10 x 15 is a gerb of 10 second duration that reaches a height of 15ft.