Polyether Foam Gutter Leaf Guards | Gutter Supply
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Filter Flow Gutter Filter

Filter Flow and Filter Flow XT Gutter Filters are a polyether foam filter insert designed to prevent leaves, pine needles and large debris from entering and clogging a gutter or downspout.  We carry filters that fit inside both k style gutters and half round gutters and they are unnoticeable from the ground.  The filters do not penetrate the roof in any way and can handle a large amount of rainfall as the filters do not soak up any water.  

Filter Flow has a proprietary coating designed to keep mosquitoes from breeding inside the gutters and to protect it against harmful UV rays from the sun.

Our standard Filter Flow gutter guard has a 5 year performance warranty and the Filter Flow XT features an industry best 25 year performance warranty.  

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