Marathon Roofing Products - RD-940 Downspout Nozzle

The Marathon RD-940 Downspout Nozzle is a durable, corrosion-resistant termination fitting made of cast nickel bronze. It is engineered with an anchor flange and countersunk mounting holes for secure installation. Available in sizes 2″ through 12″, the nozzle comes with multiple connection types — IPS threaded, no hub, or push-on — to match various drainage conditions. Options include a stainless steel bird screen for added protection. This combination of robust material and versatile design ensures reliable performance for roof drainage systems.

Key Features:

• Cast nickel bronze provides strength, long life, and corrosion resistance
• IPS threaded, no hub, or push-on connection to match drainage conditions
• Designed with anchor flange and countersunk mounting holes for secure installation
• Available in 2″, 3″, 4″, 5″, 6″, 8″, 10″, and 12″ sizes
• Optional stainless steel bird screen for debris and pest protection

• Material: Cast nickel bronze
• Connection types: IPS threaded (standard), no hub, or push-on
• Mounting: Anchor flange with countersunk holes
• Optional accessory: Stainless steel bird screen
• Sizes / SKUs:
  • 2″ – BC1-321091
  • 3″ – BC1-32110
  • 4″ – BC1-32111
  • 5″ – BC1-321111
  • 6″ – BC1-32112
  • 8″ – BC1-321143
  • 10″ – BC1-321144
  • 12″ – BC1-321145

• Select the correct nozzle size (2″–12″) to match the downspout pipe.
• Choose the connection type required: IPS threaded, no hub, or push-on.
• Position the nozzle so that the anchor flange sits flush at the wall or termination point.
• Secure the nozzle with fasteners through the countersunk holes.
• Install the optional stainless steel bird screen if needed.

Q: What material is the RD-940 downspout nozzle made of?
A: It is made of cast nickel bronze for strength and durability.

Q: What connection types are available?
A: IPS threaded, no hub, and push-on connections are available to match site conditions.

Q: How is the nozzle installed securely?
A: It is designed with an anchor flange and countersunk mounting holes for fasteners.

Q: What sizes does the RD-940 cover?
A: It is available in 2″, 3″, 4″, 5″, 6″, 8″, 10″, and 12″.

Q: Is there an option for bird protection?
A: Yes, a stainless steel bird screen can be added.