This listing is for a lot of 3 air filters compatible with Briggs & Stratton engines with a horsepower range of 12.5 to 20 HP. The filters are made by various brands including NAPA, MTD, and PRIME. They are designed for gas-powered lawn mowers and are suitable for use in a variety of outdoor environments. The filters come in a multicolor design and are an essential part of any lawn mower maintenance kit.