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(A small weight on a string will serve as a plumb bob.) Mark the ceiling where the string is suspended to locate the center of the chimney. 2. After locating the center of the hole, install the ceiling support box, chimney, flashing and rain cap per the chimney manufacturer's instructions. 3. Now connect the stove and ceiling support box using #24 ga. minimum blued or black steel connector pipe. (DO NOT USE GALVANIZED PIPE.) Connect each section so the crimped end faces downward, and secure ea