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The Kasco Marine Dock Deicer or Circulator is the answer for costly ice damage of docks and piers. Protect your marina, private dock, lake shore, or keep open a hole to prevent winter fish kill (open water allows gas exchange during ice conditions), these units are optimally designed to negate the effects of thick ice.
Functions well in salt water. The Kasco de icer also works as a marine deicer, utilizing a sacrificial anode to reduce corrosion and protect the stainless steel parts from saline environments.
The attached chart describes mounting options and the size of the area this unit will keep open under different conditions.