4" Stainless steel modular trench drain (INOX 100), B - E load classVodalands INOX 100 trench drain is a fully stainless steel drain for applications with high sanitary requirements and the need to move large volumes of water. Each drain and grate is made of 100% stainless steel, and has an internal width of 4 (7 external). The grates are reversible: with one side being a non slip texture for safe pedestrian traffic, and the other being smooth surface for wheeled traffic (i. e pump trucks, dollies, etc). Channels