48 inches long x 3 inches high x 5 inches wide with 6 inch diagonal, Fits any 5-inch K-style gutter and doesn't disturb or interfere with roofing, Easy and quick installation and requires no special tools other than a cutting instrument, Invisible from the ground level and prevents mosquitoes and other insects from breeding in gutters, Blocks pine needles, leaves, maple leaf helicopters, and other debris from entering gutters