Prices are subject to change.

Marathon BS-1300 Aluminum Retrofit Ring & Dome




Made from High-Strength Aluminum 

  • Easily replace broken parts
  • The retrofit ring and dome will match most old style existing drain bases, matching bolt patterns from 6” to 11-1/8”
  • Designed for re-roofing applications when a clamping ring is important to secure single-ply and two ply membranes in waterproof roof systems
  • By aligning the retrofit ring over the existing bolt holes in the old drain body and installing the new hold-down bolts with washers, the difficult problem of replacing matching domes is resolved
  • Keep several in stock and crews can complete installation on-site
  • Dome has a 12-1/8″ diameter, 4-1/2″ overall height
  • Includes bolts and washers