Kasco Marine 840465 Replacement Zinc Anode for 4400/8400 Series De-Icers

Kasco Marine

<h3>About Kasco Marine</h3><p>Few brands can claim they invented an entire product category, but Kasco Marine can. <strong>Founded in 1968</strong> when a Minnesota marina operator engineered one of the world&apos;s first de-icers, the company set out to solve a simple but costly problem: protecting boats and docks from the destructive force of freezing water. That single innovation launched a brand that has spent more than five decades defining the standard for aquatic water quality solutions worldwide.</p><p>Headquartered in Prescott, Wisconsin, Kasco Marine operates out of a family-owned facility with over 60,000 square feet of engineering, manufacturing, and warehouse space. That in-house capability means tight quality control and fast delivery — two pillars of a reputation built over generations. Today, Kasco distributes its products through a network spanning more than 30 countries, and its lineup has grown far beyond its de-icing roots to include aerating fountains, surface and diffused aeration systems, circulators, and beneficial bacteria biologics.</p><h3>A Legacy Built on Water Movement</h3><p>The core engineering principle behind nearly every Kasco product is the same: move water strategically to improve its quality, prevent damage, and support aquatic life. In the mid-1980s, Kasco engineers adapted the reliable de-icer motor design to create pond and lake aerators — products quickly adopted by fisheries and aquaculture operations. A further refinement added a pumping chamber to produce Kasco&apos;s iconic aerating fountains, which combine visual appeal with genuine water quality benefits.</p><p>Whether the application is a residential backyard pond, a busy marina, a municipal retention basin, or a commercial fish farm, Kasco products are engineered for continuous-duty performance in demanding environments. Stainless steel construction, dielectric oil lubrication, heavy-duty seals, and corrosion-resistant components all contribute to the brand&apos;s reputation for durability and low maintenance.</p><h3>Kasco Marine Products for Marinas &amp; Waterfronts</h3><p>For boat owners and marina operators, two Kasco categories stand out as essential cold-weather and year-round investments. The brand&apos;s industry-leading <a href="/7412-kasco-marine-de-icers-200302">De-Icers</a> remain the go-to solution for preventing ice damage at docks, pilings, and boat slips, while a range of <a href="/200325-dock-accessories-kasco-marine-7412">Dock Accessories</a> — including universal and industrial dock mounts — make installation and positioning of those units straightforward for any waterfront setup.</p><p>Kasco de-icers are available in 1/2, 3/4, and 1 HP configurations and are ETL-approved to stringent UL and CSA standards, making them among the most rigorously certified units on the market. Optional thermostat control panels allow the units to activate only when temperatures demand it, keeping operating costs in check throughout the winter season. Every unit ships with two 20-foot mooring ropes for immediate suspended operation right out of the box.</p><p>Pair a de-icer with Kasco&apos;s stainless steel and composite dock mounting hardware and you gain full control over unit depth, angle, and direction — critical factors in maximizing the open-water zone around valuable watercraft and structures. It&apos;s a complete, field-proven system backed by the brand that started it all.</p>