Our 20 Gallon, 8 Bag Extractor Bag Kit is the most advanced on the market. With countless hours of extensive professional testing, we have developed a series of various micron screens to allow you to efficiently create a perfect finished product. Microns: 220, 190, 160, 120, 90, 73, 45, 25 We offer a 1 YEAR WARRANTY against any manufacturer defects!