Effective Air Filter: Our mower air filter is compatible with Briggs and Stratton lawn mower engines, which can filter out 98% of dirt and contaminants ten microns or more, to keep the air intake clean and prevent the engine from inhaling air with dirt particles. .Size and Quantity: L 110 x W 68 x H 35, 2 holes with an inner diameter of 28mm, containing 2 pieces lawn mower air filter cleaners with 1 spark plug, which can be replaced regularly to meet your replacement needs.Practical Design: This air filter adopts an oval pleated paper design on the outside, which provides excellent protection for the engine and prevents the destructive effect of dust inhalation.High-Quality Materials: Our air filter is made of sturdy and durable plastic, with good pressure resistance, corrosion resistance and water resistance.Wide Applications: Compatible with most Briggs & Stratton 550E, 550EX Eco-Plus, 09P000, 575EX series engines with filter paper. Note: The data are all manual measurements, please allow an error of 1-76cm, due to the difference in light and display, there will be a certain color difference, whichever is the actual object received.