Model # 4400

Internet # 202516215

Store SKU # 1001243287

Flex Grate Downspout Filter

$5.87 /each
  • Filters debris from downspout before it can enter drainage system
  • Built-in connector
  • Available in black or white



Model # 4400

Internet # 202516215

Store SKU # 1001243287

InvisaFlow's flex grate filters leaves and debris from downspouts before it can enter the buried drain pipe and cause backups which can lead to costly water damage. The grate diverts leaves and debris while allowing water to flow through and drain properly. The Flex Grate keeps landscape drain pipes and rain barrels free of leaves and debris.

  • Fits 2 in. x 3 in., 3 in. x 4 in. or round downspouts with a male type end to join with 4 in. corrugated or PVC pipe
  • Easily bends and holds its shape
  • Prevents drain pipes from becoming clogged
  • Works great with rain barrels and rainwater harvesting systems

Info & Guides

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Downspout Size (In.) 
2 x 3, 3 x 4 
Maximum Extendable Length (ft.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Color Family 
Product Weight (lb.) 
.55 lb 
Downspout Connector 
Warranty / Certifications
Manufacturer Warranty 
For warranty information on this product, please call our Internet Customer Service Center at 1-800-435-4654 


Type: Downspout Connector
Material: Plastic
Price: $0 - $10
Brand: InvisaFlow
Review Rating: 3 & Up
1 Question1 Answer

Customer Questions & Answers

Flex Grate Downspout Filter
Flex Grate Downspout Filter

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This question is from Flex Grate Downspout Filter
1 answer

Flex grate downspout filter do you have one to fit 3 drain pipe

This question is from Flex Grate Downspout Filter
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September 4, 2015
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November 4, 2015
The FlexGrate is for 4" pipe but you can purchase a separate reducing that should work.
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Rated 3.9 out of 5 by 39 reviewers.
Rated 4.0 out of 5.0 by Works Well if Installed Right This was installed at the bottom of a vertical 4-inch gutter, which runs into a horizontal and sloping straight drain pipe under the ground. The drain ends at a bubber. The downspout filter really doesn't filter much for me because we have gutters with a cover over them, and usually there is nothing to filter ... I just wanted to make sure I didn't clog up the underground pipe. The downspout transfers a large amount of water pretty well, but unless you adjust the connection during a heavy rain, much of the water will flow out of the downspout side opening instead of flowing down into the underground pipe. I bought it because it looked like it would work, and the price was right. November 3, 2015
Rated 5.0 out of 5.0 by This product was essential and worked great for my project. I needed to install an underground drain pipe to channel the water from my gutter to 30 feet away from the house. My only concern was that the pipe my get clogged from leaves and debris, But, with this easy to install product, any would be obstructions are removed before entering the drain pipe, works great. August 27, 2013
Rated 4.0 out of 5.0 by Great product but needs small redesign Great product to keep underground drain pipe free of leaves. BUT needs a small improvement which I made with a pocket knife. The lower edge of the deflector shoot is held in place with the outside frame. This creates a small dam which does prevent small leaves from fall out. By cutting away most of the lower edge, it allows leaves to fall freely out. September 18, 2011
Rated 5.0 out of 5.0 by good design good product to help keep both leaves and any critters from entering the rain barrels. Easy on, easy off if you want to remove it for any reason. Good price compared to straight pipe. March 12, 2013
Rated 1.0 out of 5.0 by Good idea but didn't work I have my downspouts tied into an underground drain that got clogged with leaves and seedlings this past spring. It was very expensive to have RotoRooter come and snake out the line, so I thought this product would be the solution to that problem. The leaves and debris from the gutters should have been filtered before clogging up the line. HOWEVER, in a heavy rain, water just pours out the opening and ends up flooding the foundation of my house. Seemed like a good idea, but it didn't work. August 4, 2015
Rated 3.0 out of 5.0 by These units could be designed better. These units have a design flaw. They would work better if they didn't have a raised lip at the bottom of the angled leaf diverter. The lip catches a couple leaves and then they start backing up into the downspout, requiring routine maintenance to remove the leaves. I installed several in 2012 and routinely have to clean out the leaves, especially in the fall. June 5, 2015
Rated 3.0 out of 5.0 by Rain Harvest Good theory, but needs to be sized for the gutters; "one size fits all" leads to leaks at junctions. Positive: Inexpensive June 16, 2015
Rated 4.0 out of 5.0 by Good Filter and Easy to Install - Might not be effective for those with lots of pine trees around The grate area is too coarse to block pine needles, which we have a A LOT of! For leafy debris and small branches this will do the trick. The screen/filter area, which is a snap in plastic piece, can be removed. I put a plastic screen door mesh on it and snapped it back in to catch the pine needles. April 21, 2015
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