Kasco V-Shaped Decorative Aerators are lightweight and allow for quick assembly and installation. They are designed to increase dissolved oxygen, while operating at a lower energy cost than other comparably size models. The weatherproof control box includes a timer with GFCI protection and offers simple plug-in operation to an existing receptacle (120v models). All Kasco V-Shaped Decorative Aerators also include a bottom debris screen and 2 fifty foot mooring ropes. The 1/2 Hp, 3/4 Hp and 1 Hp V-Shaped Aerator boast a 2 year manufacturer's warranty.