Each lid needs a hole drilled. The MLT and HLT will both have lengths of silicone tubing attatched inside and will be the identical. The boil kettle will have a corrugated stainless water heater gas line with a 3/8" barb which will be aimed at the kettle wall to form the whirlpool. In addition, the kettle lid much be notched for the immersion chiller.
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