How much rain can LeafFilter™ handle?

LeafFilter™ normally channels more water into the gutter than the downspout can handle. If LeafFilter™ protected gutters overflow, it's not due to clogs, but to the gutter and downspouts inability to handle a high flow of water. LeafFilter™ has handled heavy downpours from thunderstorms with an estimated 10-12 inches of rain falling per hour on shingled roofs with a 5/12 to 12/12 pitch and rafter spans of 28 feet or less. We did NOT notice rivulets of water coming over the LeafFilter™ product.

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