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- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!This fitting connects 3½ in. corrugated pipe to 4 in. corrugated pipe. It can be used as a reducer or increaser, making it easy to transition between sizes. Made from durable HDPE, it installs quickly and provides a secure, reliable fit for your drainage system. Installation is easiest when the larger diameter pipe is installed first.
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Sale!Built to last, our coupler is made from the strongest material on the planet, HDPE, which boasts a lifespan of up to 500 years. Not only is HDPE durable, but it’s flexible enough to withstand underground buried downspouts, which is crucial when the ground settles and shifts over time.
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Sale!Introducing the ultimate solution for connecting 4 in. SDR 35 and SCH 40 PVC to 3½ in Corrugated – our HDPE coupler. Built to last, our coupler is made from the strongest material on the planet, HDPE, which boasts a lifespan of up to 500 years. Not only is HDPE durable, but it’s flexible enough to withstand underground buried downspouts, which is crucial when the ground settles and shifts over time.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!Includes:
- FDM's Turf Restrictor Plate with solid drain cover available in Black, Green or Tan
- FDM’s 3½ in. Not Quite a 90 fitting for maximum flow rate.
- FDM’s 3½ in. to 4 in. HDPE Reducing Coupler
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!Built to last, our coupler is made from the strongest material on the planet, HDPE, which boasts a lifespan of up to 500 years. Not only is HDPE durable, but it’s flexible enough to withstand underground buried downspouts, which is crucial when the ground settles and shifts over time.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Introducing FDM's New Quick Connect Pipe Connectors for 3½ in. corrugated pipe. For straight runs we recommend putting them every 2 feet and a curvy run we recommend using them every 18 inches.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
- 25 clips - $38.00
- 50 clips - $69.00
- 100 clips - $124.00
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Introducing FDM's New Quick Connect Pipe Connectors for 3½ in. corrugated pipe. For straight runs we recommend putting them every 2 feet and a curvy run we recommend using them every 18 inches.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
- 25 clips - $39.25
- 50 clips - $71.50
- 100 clips - $129.00
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Sale!Ideal for the daylighted end of a 3½ in. corrugated drain line, this flow gate blocks unwanted pests like chipmunks, snakes, birds, and rodents from entering your system. The solid cover also prevents mosquitoes from getting in and breeding inside the pipe. Includes (2) Fasteners
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Sale!The French Drain Man Flow Gate is designed for use on embankments or ditches where your drainage line daylights. It blocks unwanted pests—like chipmunks, snakes, birds, and rodents—from entering the system, while the turf restrictor plate prevents grass, weeds, and debris from covering or clogging the outlet.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Easiest connection from 1½ in. sump pump line to 3½ in. corrugated. Just need a 5/16 in. nut driver or screwdriver for the stainless steel clamp which secures the connection.
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Sale!
- SMOOTH INTERIOR DESIGN improves flow rate and minimizes restrictions.
- SPRING-LOADED CLIPS provide an exceptionally secure connection.
- RIBBED EXTERIOR for superior strength.
- INJECTION-MOLDED for consistent wall thickness.
- EXTRA-HEAVY DUTY THICK WALL construction for long-term durability. Rated to last 200 – 500 years.
- 100% VIRGIN HDPE contains no blown-in fillers or recycled material.
- DURABLE YET FLEXIBLE can withstand ground shifting and settling that occurs with underground drainage.
- WEATHERABILITY can withstand both extreme cold and extreme heat.
- Made in the USA.
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Sale!
- Joins 3 pieces of 3½ in. corrugated pipe at a 90° angle
- Easy snap connection to corrugated pipe
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!Introducing the ultimate solution for connecting 4 in. SCH 40 PVC to 3½ in Corrugated – our HDPE coupler. Built to last, our coupler is made from the strongest material on the planet, HDPE, which boasts a lifespan of up to 500 years. Not only is HDPE durable, but it’s flexible enough to withstand underground buried downspouts, which is crucial when the ground settles and shifts over time.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!
- Joins 3 pieces of 3½ in. corrugated pipe at a 45° Y angle
- Easy snap connection to corrugated pipe
- Provides directional flow
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!Introducing French Drain Man's innovative "Not Quite a 90" – the ultimate solution for efficient water drainage around your property. This unique fitting is designed with a built-in slope, ensuring the perfect angle for redirecting water away from your house or achieving the ideal pitch for your pop-up emitter.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!
- Connects (2) 3½ in. Drain Lines to a 4 in. Main Line
- Easy snap connection to corrugated pipe
- Provides directional flow
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Sale!
- Joins 2 pieces of 4 in. corrugated pipe to 3½ in. corrugated pipe at a 45° Y angle
- Easy snap connection to corrugated pipe
- Provides directional flow
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
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Designed to create a watertight connection when installing 3½" corrugated pipe into dual-wall or 4" ribbed pipe.
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Introducing our new fasteners, engineered for strength and safety. With a thoughtfully rounded design, these fasteners eliminate sharp edges, ensuring a smooth handling experience without sacrificing durability. Their perfect length guarantees a secure and reliable fit for a variety of applications. Ideal for both professionals and DIY enthusiasts, our fasteners combine robust performance with a user-friendly design.
- 100% Virgin HDPE: Made with no blown-in fillers or recycled materials.
- Made in the USA.
- White (same color as FDM 3" fittings)
- Light Blue (same color as 3½" fittings)
- Royal Blue (same color as most FDM 4" fittings)
