Kasco Marine Inc. 3400D050 Length Marine De-Icer (120V Single Phase, 60Hz, 50' Cord, 3400D 3/4 HP) Creates a large amount of water flow that prevents ice formation Allows oxygen to enter the water in the winter providing improved water quality and habitat Keeps up to a 75' diameter of open water 122 Volt configuration with 50' cord All units come with two 20' (6m) mooring lines; other optional mounting systems are also available