Aluminum Fast Flow Drains

The Marathon Aluminum Fast Flow Roof Drain with Clamping Ring series (BFF200CR, BFF300CR, BFF400CR) is designed for retrofit and new roofing applications. Each model features a heavy-duty spun aluminum body, a 16-inch flange, and a 12-inch outlet. The clamping ring version includes a 10-inch polyethylene strainer, ABS clamping ring, and expanding tape anti-backup seal for watertight connections. Available in 2-inch, 3-inch, and 4-inch outlet sizes, these drains provide durability and...

The Marathon Aluminum Fast Flow Roof Drain series (BFF200, BFF300, BFF400) is designed for both retrofit and new direct-connect installations. Each model features a heavy-gauge spun aluminum body, a 16-inch flange, and a 12-inch outlet. Depending on the version, drains are supplied with a 10-inch polyethylene strainer with clamping ring or an 8-inch polyethylene strainer without a ring. Options include PVC- or TPO-coated flanges and a rubber coupling for secure pipe connection. Key Features:...

The Marathon Aluminum Fast Flow Roof Drain with Clamping Ring & Expanding Tape Seal series (BFF200-SCR, BFF300-SCR, BFF400-SCR) combines the durability of spun aluminum with the security of an ABS clamping ring and expanding tape seal. Designed for retrofit and direct-connect installations, these drains feature a 16-inch flange, 12-inch outlet, and a 10-inch polyethylene strainer. The expanding tape anti-backup seal ensures watertight performance, making these drains ideal for single-ply...

The Marathon Economy Aluminum Roof Drain series (BFF175ECO through BFF575ECO) offers a cost-effective retrofit solution with a heavy gauge spun aluminum body and a simple bolt-down aluminum strainer. Designed without a clamping ring or seal, this series is intended for installations where basic drainage functionality is sufficient. All models include a 16-inch flange and 12-inch outlet, and are available in sizes 2″ through 6″. Key Features: Available in 2″, 3″, 4″, 5″, and 6″ sizes (SKUs...

The Marathon Extended Aluminator Roof Drain series (BALUM2CRXL through BALUM6CRPXL) is a heavy gauge spun aluminum retrofit drain designed for extended outlet applications. It features a 22-inch drain outlet (plus approximately 2-inch protrusion with seal), a cast aluminum ring and strainer, and standard ProSeal mechanical seal to prevent backflow. Offered in sizes from 2″ to 6″, this drain includes options for PVC or TPO coated flange and delivers high flow performance under a peak water head...

The Marathon Fast Pak Cast Iron Roof Drain (BS-1110FP for 3″, BS-1120FP for 4″) is a direct-connect roof drain made of cast iron, designed for easy installation directly from the roof deck without needing an under-deck clamp. It features a galvanized 18″×18″ extension/bearing flange, a molded polyethylene strainer bolted to a 10″ epoxy-coated aluminum clamping ring, and a flexible rubber expansion coupling. Ideal for use with steel, wood, concrete, or gypsum roof decks under single-ply or...

The Marathon Aluminator Pro Retrofit Roof Drain series (BALUM2CRPRO through BALUM6CRPRO) delivers heavy gauge spun aluminum construction with upgraded coated components. Each drain includes a coated 10″ aluminum clamping ring, coated 10″ aluminum Pro Dome security strainer, and ProSeal rubber mechanical seal. With a 16″ flange and 12″ outlet, the Pro series ensures strength, easy installation, and dependable water flow performance across sizes 2″ to 6″. Seal dimensions and flow rates are...

The Marathon Aluminum Gutter Drain retrofit series (BGUTTERALB variants) is designed for tight roof conditions such as gutters or corners where removal of existing drains is difficult. Constructed with a heavy gauge spun aluminum body, each drain includes options for ProSeal mechanical seal or tape seal, and choices between stainless steel snap-on flat grates or 5″ aluminum strainers. All models come with an 8″ × 8″ flange and a 12″ outlet, and are available in 3″ and 4″ sizes. Key Features:...