3M™ Versaflo™ Spark Arrestor, TR-662 Spark Arrestor can be used with all TR-600 series filters. It helps prevent sparks and other hot particles from damaging the filter and must be used whenever sparks or hot, airborne particles are present in the workplace. The TR-662 spark arrestor also acts as a pre-filter by capturing many of the larger particles that would otherwise be drawn into and clog the main filter. Spark arrestor helps prevent sparks and other hot particles from damaging the filter Sparks arrestor must be used whenever sparks or hot, airborne particles are present in the workplace Also acts as a pre-filter by capturing many of the larger particles that would otherwise be drawn into and clog the main filter Spark arrestor