Best Vacuum Filter Compatible with Eureka DCF21 Dust Cup Filter Made to fit AS1000, AS1040, 3270, 3280, 4230, 4240, 8810, 8860, 8870 Upright Vacuums. Best Vacuum Filter compatible with Eureka DCF21 Filter Fits AS1000, AS1040, 3270, 3272AV, 3280, 4230, 4240, 8810, 8860 and 8870 series upright vacuums. Compare to Eureka part number 68931A & 68931 Designed & Engineered by Best Vacuum Filter