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Parapet Overflow Drain

Quick Overview

Parapet Overflow Drain can be used in conjunction with our stand alone drains or by itself. With standard break the drain outlet is 2" off the roof (can be made to specifications). Made of 16 oz. sandblasted copper for excellent membrane adhesion. Available in bonderized steel.

To place an order, please call us at (800) 658-2473 for pricing and availability.
(Part Numbers located in the table below, under Technical Specifications)

Product Drawings:
Drawing for Parapet Overflow Drain   (PDF)  
CAD File for Parapet Overflow Drain   (DXF)  


  • Parapet Wall Overflow Drain
  • 16 ounce copper flashing
  • Overflow outlet is 2" above the break
  • 2", 3", or 4" bronze no hub fitting
  • Manufactured in the USA by Thunderbird Products

Technical Specifications

Product Drawing Drawing for Parapet Overflow Drain   (PDF)  
CAD File for Parapet Overflow Drain   (DXF)  
Installation Flat Roof
Material Copper
Part Numbers
OFPP2NH 2" No-Hub Parapet Overflow Drain
OFPP3NH 3" No-Hub Parapet Overflow Drain
OFPP4NH 4" No-Hub Parapet Overflow Drain
Also available in Bonderized Steel. Prefix part number with "B-". Example: "B-OFPP2NH", etc...

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