This is the exact tray used in the RAIN2 and RAIN4. Hand made cast polyurethane, with hole on top for waterfall pipe, and hole on bottom for optional pole mount. Also the top surface is rough to hold on to algae longer before draining down through the drain hole.
Note that the fit of the black pipe into the top of the tray varies from pipe to pipe, and we test fit each one and adjust it for a final fit. So if you get this replacement tray and it is too tight, you will need to sand or grind the pipe a bit, or the hole in the tray, for a looser fit. And if it is too loose, you will need to melt small marks into the pipe, or squeeze it out-of-round a bit, or use plumber's tape, for a tighter fit.
And if you use a pole mount on the bottom, and the fit is too tight, you'll need to sand or grind down your pipe to make it thinner, or use a router bit inside the hole to make it wider. And if the pole mount fit is too loose, you will need to melt small marks into the pipe, or squeeze it out-of-round a bit, or use plumber's tape, for a tighter fit.