The perch is a manzanita branch that was cut at 2 points, perpendicular so they fit in a corner. I drilled pilot holes through the tub and perch, then screwed it in place. It was actually really easy, and should be no problem if you have a drill and 2 screws. You can use wooden dowels or pvc screwed crosswise for tub perches if you don't happen to have any perpendicular cut manzanita lying around.