The Amerimax Low-Profile Catch Basin Downspout Extension moves rainwater away from your foundation and home. This low-profile basin sits just below the surface, creating a discreet appearance that blends into your yard. Unlike traditional drainage systems, installation requires no digging—simply position the basin, attach your downspout, and cover with mulch, stone, or straw for a natural, finished look.
Poor drainage near your home’s foundation can create problems. This extension system solves that by directing water away efficiently and affordably, without the expense and labor of buried drainage systems.
Features and Benefits
- No-Dig Installation: The low-profile design sits at or just below ground level, eliminating the need for excavation or complex installation.
- Durable Resin Construction: Made from resin to withstand the outdoor elements.
- Universal Compatibility: Works with all standard residential downspouts, including 2″ x 3″, 3″ x 4″, and round styles.
- Included Pipe System: Comes with 8 feet of 2″ pipe to direct rainwater away from your foundation.
- Dual Drain Holes: Features two drain pipe knockouts and a cap, allowing you to use one or both holes depending on your layout.
- Customizable Coverage: Easily blend into your landscape by covering with mulch, stones, straw, or other garden materials for a natural appearance.
Specifications
- Brand: Amerimax
- Model: 4700
- Material: Resin
- Color: Black
- Compatible Downspouts: 2″ x 3″, 3″ x 4″, and round standard residential downspouts
- Included Pipe: 8 feet of 2″ pipe








