• Simple and easy to install from rooftop in 15 to 30 minutes
• The 2-in. and 8-in. O-Ring RetroDrains have a one-piece, seamless body eliminates the possibility of leaks due to poor welds at the stem and flange connection. 
• Extra large flange for positive attachment of the roof flashing membrane.
• Drain stem accomodates most existing field connections or can be field cut to accomodate quick turn elbows.
• 2 rubber O rings make a dependable watertight seal.
• Available with either a U-Flow or SuperDome cast aluminum strainer dome, a plastic strainer dome, or a RAC aluminum strainer dome. These are all designed to minimize damming and improve drainage. All models have appropriate aluminum clamping ring.
• Saves time and money by allowing easy installation from the rooftop without disturbing occupants.

OlyFlow RetroDrains are designed to replace existing drains in reroofing applications. Installed from the roof surface, the OlyFlow RetroDrains are engineered to be installed without removing the existing plumbing or fixture while providing a watertight connection to the roof system and the existing plumbing.

As with all building materials it is the responsibility of the installer to review its usage with a design professional to confirm safety, compatibility and acceptance with the roof cover manufacturer as well as local building codes.