This cloth filter has a particulate rating of 3 microns and can be installed for all general vacuuming applications where water is not present.<br /><br />This cloth filter can be continuously used for many years as it is a cleanable &amp; washable accessory.<br /><br />This cloth filter is for general purpose applications when vacuuming dry debris such as wood shavings, wood dusts, general dirt &amp; dust etc.<br /><br />It is possible to use KP700-19 &ldquo;FILTER CARTRIDGE 3 MICRON&rdquo; in conjunction with this filter cloth hat for additional debris filtration requirements.<br /><br /><strong>NOTE:</strong> A VACUUM FILTER ONLY WORKS WHEN IT IS CLEAN! IT IS RECOMMENDED THAT THE FILTER BE CLEANED REGULARLY (PRIOR TO EACH USE &amp; PERIODICALLY DURING USE) SO THE FILTER CAN FUNCTION CORRECTLY. <br /><br /><strong>CAUTION:</strong> DO NOT USE CLOTH FILTER IN WET VACUUMING APPLICATIONS.<br />