Numbers and Titles



Includesdampers, duct access panel and test holes, flexible duct connectors, turning vanes and extractors, and sound attenuators. balancing, back draft, fire, smoke, and combination fire and smoke dampers.
See23 07 13 for duct insulation. 23 09 00 for instrumentation and control for HVAC. 23 31 00 for HVAC ducts and casings.
23 33 13Dampers
23 33 19Duct Silencers
23 33 23Turning Vanes
23 33 33Duct-Mounting Access Doors
23 33 38Duct Security Bars
23 33 43Flexible Connectors
23 33 46Flexible Ducts
23 33 53Duct Liners