The TR-662 spark arrestor may be used with all TR-600 series filters and cartridges. It helps prevent sparks and other hot particles from damaging the filter/cartridge, and can be used as a cleanable prefilter. Price is for one package of 2.
3M Catalog Nbr/Prod ID: TR-662
UPC: 0-00-51131-37355-6
3M ID: 70-0716-1825-3