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The Flex-Drain Downspout Extension Adapter is a white plastic fitting that connects a 2-by-3-inch downspout to 3- or 4-inch drain pipe. Its bendable body extends up to 16 inches so you can angle runoff away from the foundation and landscaping. It is a simple, low-cost fix for splash problems at the base of a downspout, but it is a light-duty plastic part, not a rigid metal transition. It suits homeowners with standard 2x3 gutters who want a quick, tool-light connection rather than a permanent plumbing-grade fitting.
In stockSold by Supply the HomeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Ratings are middling. Buyers like the flexibility and easy install, but some report the plastic is flimsy and the fit is loose on their downspouts.
The Flex-Drain Downspout Extension Adapter connects a downspout to 3 in. or 4 in. drain pipes. It is made from durable plastic and has a bendable design, so you can direct water away from your foundation and landscaping.
The adapter extends up to 16 in. It is lightweight and white, and it works with other Flex-Drain accessories. It is made by Amerimax Home Products.



