Note: Junlan Hardware's push pull handles ladder handles commercial door handles are mainly made of Grade 304/316 stainless steel materials, and in some designs wood or crystal parts are added to give them a fancy look. As the materials sometimes change in price and the production procedures vary drastically, the quotation above is for reference only (To be honest, it's not much reference at all). You are strongly recommended to visit our factory in person and talk face to face with our designing team, who will give you a more concrete idea. The products are supposed to be rust resistant. However, if your project is close to the coast and is subject to the influence of salty ocean climate, the stainless steel parts, due to material, mounting or installation defects, may grow rust unless you take good care of them (In case of suspect defect, spray a thin layer of antirust agent there).