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Product Description
This is based on the Standard Pattern Cowl Ventilator as made to Classification Society Rules. The trunk (the smaller tube that goes into the deck) is made to connect to Evergreen #234 tubing. The Cowl is .876 in. dia. The trunk matches the tubing at .438 in. and has a small stud .340 in. dia. that matches the tubing I.D. This way you can make the ventilator any height you desire. These were designed for the Boiler Room for an O scale / 1:48 ship. The Boiler Room ventilators were larger than the ones used for the Engine Room as they (Boiler Room) had a secondary purpose in that they were also used as elevator shafts to lift ash buckets which were used to raise and dump ashes over the side into the dump scows while in harbor, if the steamer is a coal burner.
See line-drawing for exact measurements of all cowl ventilators
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