What is GutterBrush?GutterBrush is a simple "Twisted in Wire" brush, similar to a large heavy duty bottle-brush. Constructed from a galvanized steel core and durable, UV protected polypropylene bristles. Available in diameters from 3.25 inches up to 8 inch diameters.How Does GutterBrush Work?GutterBrush bristles fill your gutter blocking leaves and debris from entering while letting water flow through.What Size Do I Need?Measure the width across the top of your gutter from the back wall to the outer edge of your gutter.Why GutterBrush? GutterBrush Works! Prevents clogged gutters, reduces gutter cleaning and expensive property damage associated with gutter problems.GutterBrush is Affordable! GutterBrush costs thousands less than many competitive gutter guard systems.GutterBrush is Simple! No complicated covers or screens to interfere with your roof or shingles. GutterBrush just lays inside your gutter blocking debris while water flows through.When your installation comes up a few feet short or maybe just want to place GutterBrush over your downspouts to test performance before ordering enough for your entire gutter system, we have you covered with our new 6 ft. Downspout / Trial Pack.You will receive 4 sections of GutterBrush for Standard 5 Inch Gutters each measuring 18 inches in length for a total of 6 feet. Put them to the test in a section of your gutter that receives the most trouble or just place a section over 4 downspouts to make sure nothing clogs them. If you just place GutterBrush sections over your downspouts, please expect the rest of your gutters to still fill up with debris and eventually need to be cleaned. For best results, and clog free gutters, fill your entire gutter channel with GutterBrush.