IPC Subgroup
E04F 17/04 Air-ducts or air channels
Introduced: September 1968
Last revised: January 2006
Full Title
Vertical ducts; Channels, e.g. for drainage > Air-ducts or air channels
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- BUILDING
- Subclass:
- FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Related Keywords
built-in VENTILATION ducts in buildings