Compatible with three inlet sizes: 3" (76mm), 3.5" (89mm), and 4" (100mm) for versatile fitment in various vehicles. Features a conical design with deep pleats and hexagonal honeycomb mesh for enhanced airflow and increased engine performance. Constructed with a thickened sponge top and a three-layer synthetic non-woven fabric for superior filtration and durability. Reusable and washable design helps reduce waste while effectively protecting your engine from harmful contaminants. Easy installation with a clamp-on mechanism and included adapters, requiring no complicated tools for setup.