FILTERWEARS Pre-Filter K281K For K&N Air Filters RE-0810 RE-0870 Reduces overall maintenance cost, Extends air filter service intervals, Adds convenience, Extends the life of air filter Keeps your high performance filter free of debris/dirt and water, Effective barrier for any particle bigger than .005 inches No reduction of functionality in freezing temperatures, Hydrophobic fabric is standard (water repellant), Handle heat up to 450 degrees Fahrenheit Made from 100% monofilament polyester, with straps at the base of pre-filter for ease of installation Size: 4.63"T, 6.0"B, 9.0"H