Long life filter bag for use with the CT MIDI Dust Extractor (suits superseded CT MINI & MIDI models - not suitable for new CT MIDI-2 575839). Designed with a non stick, micro pore plastic lining from high strength, 3 layer polyester fleece. The Long life filter bag can be used up to 500 times for extraction of dust types which are not hazardous to health. The Long life filter bag saves money on filter bag replacement while offering a convenient and easy means to capture and dispose of large wood chips. Not recommended for use with the fine dust created by sanding. Integrated cap forms a tight seal during bag removal and disposal, keeping the dust contained and off the floor.