GutterStuff Ez, the easiest self installed gutter filter on the market. It is affordable and invisible from the ground. GutterStuff eliminates dangerous and dirty gutter cleaning so you can spend time doing the things you enjoy. Unlike other systems, installation is simple and easily installs in minutes. It does not require special tools. GutterStuff fits completely inside any 5-Inch K style gutter-the most common style and size on the market today. When you reach a corner you make a miter cut using a scissors or a knife. GutterStuff seals out leaves while allowing large volumes of water to flow through quickly. No other gutter cover, screen or guard system works as effectively to keep debris from entering the gutter. Product comes in 4' sections made from polyether outdoor durable foam, this lightweight insert won't crumble, dent, bend or cave in, allowing for satisfied customers. It also prevents mosquitoes from breeding in the gutter. The foam's main structure includes UV stabilizer, a germicide, and a fire retardant. 3 year performance warranty.