The Amerimax 51310 FLEX-Drain Solid Pipe is a professional-grade, expandable drainage solution engineered for strength, flexibility, and long-lasting performance. Designed to move water efficiently from one point to another without infiltration, this 4-inch by 25-foot solid pipe is ideal for a wide range of residential and commercial drainage applications, including downspout runoff, foundation protection, and landscape water management.

Key Features:

• Expandable and Flexible Design:
  This pipe expands from a compact form to a full 25 feet, allowing it to bend around obstacles and conform to tight or irregular spaces without the need for additional fittings or elbows. Ideal for curvy places and tight spaces 

• Solid Wall Construction:
  The non-perforated design ensures that water is directed exactly where you want it—perfect for applications where water needs to be carried away from structures or sensitive areas without seeping into the surrounding soil 

• Durable No-Break Copolymer Material:
  Constructed from high-strength, UV-resistant polypropylene, the 51310 is built to withstand harsh environmental conditions. It exceeds ASTM standards and features a proprietary peak-and-valley design that offers 30% greater load-bearing capacity than standard corrugated pipe 

• Soil-Tight Snap-Lock Fittings:
  Integrated snap-lock ends provide a secure, soil-tight connection that eliminates the need for taping joints, ensuring a leak-resistant seal during backfilling and long-term use

• Universal Compatibility:
  Compatible with 3" and 4" corrugated pipe and 4" PVC systems, this pipe integrates seamlessly into existing drainage setups with the appropriate fittings 

Specifications:

• Model: 51310
• Material: Polypropylene (no-break copolymer)
• Color: Black
• Nominal Diameter: 4 inches
• Outside Diameter: 4-3/32 inches
• Length: 25 feet (expandable)
• Type: Solid (non-perforated)
• Connection Type: Snap-lock, soil-tight
• Weight: Approx. 2.72 oz

Ideal Applications:

• Redirecting downspout runoff
• Channeling water away from foundations
• Connecting to catch basins or dry wells
• Above-ground or underground drainage systems
• Temporary or permanent water diversion