With a mounting frame, the aerator can be fi tted and removed in one piece and in one operation, without having to be disassembled. On a normal aerator, the relatively large moving mixing section requires the turbine to be disassembled and the gear motor and mounting parts to be individually removed, followed by the moving section from underneath. Our frame is wider than the diameter of the aerator, which allows the entire unit to be lifted by the four corner-mounted lifting lugs.