Marathon DUA20 Dura Strainer for Dura Anti-Backup Drains

Marathon DUA20 Dura Strainer is used for Dura Anti-Backup Drains. It is a flexible, open-weave basket designed to fit drain opening sizes of 3 inches to 5 inches. It is made to be compatible with the Marathon Dura Plastic Retrofit Roof Drain. The BDUA20 strainer is designed to fit into the drain opening, preventing unwanted debris like leaves or dirt from entering the drain and potentially clogging it.