Advanced Drainage Systems 0464AA Downspout Adapter 2x3x4

Product Description

The ADVANCED DRAINAGE SYSTEMS 0464AA is a downspout adapter designed to transition a standard rectangular 2-inch by 3-inch downspout outlet to a 4-inch round poly drain tube. Constructed from polyethylene, this adapter connects above-grade gutter and downspout systems to below-grade drainage pipe, directing roof runoff away from foundations and landscaping. It is a common component in residential and light commercial stormwater management installations and is typically handled by plumbers, drainage contractors, or experienced landscaping crews.

This adapter is suited for residential gutter drainage systems where the existing downspout measures 2 inches by 3 inches and the underground drainage line is 4-inch round corrugated or smooth-wall poly pipe. It is commonly installed at the base of a downspout where the above-grade rectangular section meets a buried drain run. The 4-inch round outlet provides adequate flow capacity for typical residential roof drainage loads.

Key Features

• Transitions 2-inch by 3-inch rectangular downspout to 4-inch round poly drain tube
• Polyethylene construction resists corrosion and weathering
• Designed for above-grade to below-grade drainage connections
• Lightweight at 2.76 pounds, simplifying single-person installation
• Sold individually, packaged in quantities of 24

Compatibility

Designed as an OEM-style replacement or new-installation adapter for residential gutter downspout systems using 2-inch by 3-inch rectangular downspouts connecting to 4-inch round poly drain pipe.

Installation Notes

Installation is typically performed by plumbers, drainage contractors, or qualified landscaping professionals familiar with site drainage requirements. Ensure the downspout is secured and the underground drain line is properly sloped for gravity flow before making the connection. Local building codes may govern stormwater drainage installation — consult applicable municipal or IPC guidelines before proceeding. No special tools are required beyond basic hand tools for securing the adapter in place.

Technical Specifications

• Inlet Size: 2 inches x 3 inches (rectangular)
• Outlet Size: 4 inches (round)
• Material: Polyethylene
• Weight: 2.76 pounds
• Unit of Measure: Each
• Package Quantity: 24

Standard Information

• Brand: ADVANCED DRAINAGE SYSTEMS
• Manufacturer Part Number: 0464AA