I recently used my new duda plate chiller for the first time. Before brewday, I ran several gallons of hot oxyclean through the chiller and plenty of clean water to rinse. The sticker on top was removed so I could place the entire unit in the oven to dry/sanitize. Worked better than expected on brewday: 60 gal cooled in 30 min.
B3-23A Long 40 Plate Wort Chiller Beer Brewing Heat Exchanger 12.4" x 2.9"