Paper air filter, 5-1/4-inch x 4-1/2-inch x 1-inch, fits 4 - 5.5 HP Briggs & Stratton vertical shaft & 3 & 5 hp quantum horizontal shaft engines, with horizontal rewind, replaces Briggs #491588, 399959.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov