A polypropylene channel with Class D cast iron grate. Designed for
highways & roads subject to fast moving heavy commercial vehicles.
Eight point lockdown security fixing & anti-slip nodules. See blog post
Internal Dimensions: 300mm x 300mm
External Dimensions: 350mm x 350mm
please see product downloads below for more details
Will Cast Iron Grates Rust? Like most metals, cast iron goes through a natural oxidation process, resulting in an outer protective coating known as rust. This process is called Patina. Patina is a naturally occurring process and shouldn’t be confused with corrosive rust. Read more here.