Two chimney duct covers are supplied with wall mounted rangehoods. The 740mm chimney extension is an optional extra used when extra height is required in high ceiling situations. The extension replaces the existing upper cover that is supplied with the rangehood. Suits models HC60PCHTX2, HC90PCHTX2, HC60PCIX2, HS90CSX3. Also suits Elba Models HC60PCIX2, HC90PCIX2, HC90PCIEX3, HC60PCIEX3.