1592953353000 1312632483000 term-46419 1616541060926 1312632539000 1616290316339 adlib fitz-online adlib-term-46419 294e15e0-eb46-31a3-a89d-4e2aa17545b7 2 1 scope note Includes any tubes or conduits for conveying air to and from enclosed spaces or corridors within a wall or other structure used for conveying air. STEIN reference term-46418 adlib-term-46418 adcb0270-99e8-3595-b9ec-6c5a2e60fcee air duct V.PJ.AFU.ALO.AFU.ALO.ARI.ARI 1 code V.PJ.AFU.ALO.AFU.ALO.ARI.ARI 1 air ducts reference term-46447 adlib-term-46447 483f7450-551c-35b6-bce0-29e7c8505e11 <ventilation system components> air ducts term