Give your aging windmill tower a second life with the OWS Old-Time Windmill Retrofit Kit. Designed specifically for property owners who value both heritage and performance, this kit allows you to transform an existing tower-even one built 50 to 100 years ago-into a fully functional aeration system. The retrofit steel receiver installs easily, either by bolting or welding directly to your old tower. Once secured, it accepts our modern windmill head-engineered to capture wind efficiently, even in low-breeze conditions. The result? Reliable, off-grid pond aeration without the cost or hassle of removing and replacing your historic structure. This is more than a repair-it's a revival. Preserve the nostalgic character of your property while ensuring healthy, oxygen-rich water for generations to come. With OWS, you don't have to choose between honoring the past and investing in performance. You get both.