This page displays all 「FI」 in main group F23L11/00. HB:Handbook CC:Concordance ReturnTo FI-Section/Broad-Facet-Choice Onelevelup F23L11/00 Arrangements of valves or dampers after the fire HB CC 3K023 F23L11/02 .for reducing draught by admission of air to flues HB CC 3K023 TOP
F23L11/00 Arrangements of valves or dampers after the fire HB CC 3K023 F23L11/02 .for reducing draught by admission of air to flues HB CC 3K023