Marathon Drain Retrofit Ring & Domes

Marathon Drain Retrofit Rings and Domes are easy to install, simplifying replacing existing drains. The dome twists into the ring for simple removal and installation. The V channel scallops openings on the ring and dome allow maximum drainage. These are best for re-roofing applications and work best with existing bolt holes. The drain Fits three or four bolt patterns ranging from 6-1/2 inch to 11-3/4 inch.