The 3M™ Versaflo™ Filter Cover, TR-6300FC is a filter cover for use with the 3M™ Versaflo™ Cartridge, TR-6320N, 3M™ Versaflo™ Cartridge, TR-6350N, and 3M™ Versaflo™ Cartridge, TR-6360N. 3M recommends the use of the filter cover to help protect cartridges from damage. The 3M™ Versaflo™ Filter Cover, TR-6300FC is used to hold the 3M™ Versaflo™ Prefilter, TR-6600 or 3M™ Versaflo™ Spark Arrestor, TR-662 in place.Delve into 3M Products and experience the wide variety of products and replacement parts offered with powered air purifying respirators (PAPR). In addition to powered systems, 3M also offers supplied air respirators (SAR) using air from an air tank or a different external source.