- AmeriMax # 4400 InvisiFlow 18″ Flex-Grate Black PVC Downspout Filters
- For standard downspout sizes 2″ x 3″ , 2″ x 2″ , or 3″ x 4″
- Easy to install
- Connects to a standard 4″ corrugated or a PVC drain pipe at bottom
- Screw onto gutter downspouts for the best results
- 18″ in length
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