Stainless steel AISI 304 (1.4301), sheet thickness 2mm. raised outer edge, sheet thickness of 8mm. The round well house. diameter 255mm is seamlessly deep-drawn. According to the European standard EN 1253. The well housing and odor trap (flow rate 5.7 l/s) are designed in such a way that no dirty water remains in the well body, but only in the stench trap according to EHEDG. Water seal height 50mm according to EN1253. Stench lock 2-piece and removable. Hermetically sealed. After folding and welding, the whole is pickled by immersion and passivated.