Fits Models: HS 46, HS 46 C, HS 56 C, HS46, HS46 C, HS46C, HS56, HS56C, HS 46 C E, HS 56 C E, HS 46 C E Z, HS 46 Z, HS 56 Z, HS 56 C E Z, HS46CE, HS56CE, HS46CEZ, HS46Z, HS56Z, HS56CEZ - Stable plastic frame resists deformation and seals securely in the air box - Durable filter media helps trap dust, grass fines and airborne particles - Protects the carburettor and engine internals from premature wear - Helps maintain smooth idling, clean acceleration and reliable starting - Supports optimal airflow for consistent cutting performance