ALA INOX DP FLESSIBILE (double wall) consists of a flexible smoke duct made in AISI 316L (EN 10088 Gr. 1.4404) stainless steel with corrugated exterior wall and smooth interior wall. ALA INOX DP FLESSIBILE (double wall) is totally compatible with the ALA INOX MP (single wall), so that it is possible to create mixed systems "ALA INOX MP – ALA INOX DP FLESSIBILE" as well.