GutterStuff Black Polyether Gutter Guard 5 W in. x 4 L ft. for 5 in. Gutter System (Pack of 8)GutterStuff introduces a gutter guard that has easy installation and simple usage. This gutter filter fits completely inside any 5 inch K style gutter, the most common style and size on the market today. GutterStuff gutter covers seals out leaves while allowing large volumes of water to flow through quickly. It is made from polyether outdoor foam that is durable and robust. Use this lightweight polyester foam insert that won't crumble, dent, bend, or