flexible ventilation ducting

flexible ventilation ducting

[‚flek·sə·bəl vent·əl′ā·shən ‚dək·tiŋ]
(mining engineering)
Flexible fabric tubes covered with rubber or polyvinyl chloride, used for auxiliary ventilation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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