Festool 456790 CT MINI / MIDI Main Filter Element is a standard 1 micron filter designed specifically for the CT MINI and CT MIDI dust extractors. Wood dust can be particularly difficult to remove once airborne, making effective dust extraction essential during woodworking and fabrication. This filter is engineered to trap particles as small as 1 micron while maintaining optimal airflow, ensuring your dust extractor reaches full capacity without clogging or caking. By using this filter, you can significantly reduce airborne dust, creating a cleaner and safer work environment. Each package includes one Standard Main Filter Element compatible with both CT MINI and CT MIDI models. Model Number: 456790