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# Top of ventilation shaft connected 00 00 00 connected 00 00 01 connected 00 00 02 connected 00 00 03 connected 00 01 04 connected 00 02 04 wallw -5.0 0.0 0.0 walle 5.0 0.0 0.0 walls 0.0 -5.0 0.0 ceiling 0.0 0.0 5.0 comment Top of ventilation shaft