Duct NTO, 1,5 m, with lid, spiral-seamed, ETS

Spiral-seamed ventilation ducts. Curved. Dimensions and tolerances (according to European standard - EN 1506). The pipes are made of hot-dip galvanized sheet steel according to EN 10327 with zinc thickness 275 g / m2 (double-sided). This material is suitable for use in environments with corrosivity class C2 according to ISO 9223 and / or environmental class M2 according to HVAC AMA 98. Tolerances Sheet thickness: According to SS-EN 10143 Weight: +/- 10%.
Weight is expressed in kilograms / meter.