The RHF14 dust tank filter set (2 pcs) is engineered for Dreame L10s Pro Ultra, X40 Ultra series, L40 Ultra, X40 Master, and related models. Its multi-layer design captures 99.97% of particles ?0.3 µmincluding fine dust and allergenswhile preserving airflow. Tool?free installation and washable construction ensure sustained suction performance and cleaner exhaust air for healthier indoor environments.