Thanks to its bottomless construction, the channel is designed to quickly collect and then gradually drain accumulating rainwater through the gravelled base layers of the respective substrate. It also includes two integrated filter inserts, one of which can be added depending on the intended use and applicable regulations. The first insert sits below the grating and features upturned edges that help hold back coarse dirt such as sand or leaves, and even tire wear particles and microplastics. The optional second insert is able to filter out substances found in the water such as heavy metals, as is often a requirement for public areas.
