The stainless steel which is used by GLATZ is manufactured in 1.4301 / 304 material quality, the industrial standard for outdoor articles. As high quality stainless steel is constantly exposed to weathering, it should be maintained at regular intervals so that it retains its original appearance. Although stainless steel is generally resistant to corrosion, the impact of salt or chlorine can leave small brown marks on its surface. These have no impact on the durability or lifespan of the product. This amounts to surface discoloration only, and can be removed easily with the use of a sponge. Make sure that you rub the steel gently in the direction of the surface treatment. In the case of older stains, GLATZ advises you to treat the material with a «stainless steel cleaner».