Washable and reusable; Traps 99.97% of household airborne particles. Absolutely essential for allergy sufferers; Replaces OEM part # 68931, 68931A, 1397058, 606448, 68931-2, 68931A-2, 68931-2 DCF, 689312, 68931A-2, Electrolux EF91, EF91B, EF 91B, EF-91, EF-91B, 9001660803, Walmart Arm & Hammer Filter #64221-2, HQRP HEPA H13. Compatible with Eureka Bagless Airspeed models: AS2013A, AS2030A, AS2111A, AS2113A, AS3001A, AS3011A, AS3012A, AS3030A, AS3033A, and AS3104A. Also fits 3270 and 4230 Series Vacuums Including 4235AZ, 4236AZ, 460AZ, SA3276AZ, UK4236AZ, UK4237AZ, 3276AVZ, 3276AZ, 3277AVZ, 3279AZ, 3281BZ, AirSpeed AS1000A, Electrolux Z3281AZ, Z3276AZ, Z3277AZ, Z4236AZ, Z4237AZ, ZAS10 Airspeed, Z32 Powerglide. Package contains: 2 (two) dust cup filter replacements; 2 Pack Washable Dust Cup Filter Replacement Parts 67821 68931 68931A Compatible with Eureka DCF-21 Vacuums. Product details: Washable and reusable; Traps 99.97% of household airborne particles. Absolutely essential for allergy sufferers; Replace your filter every 3-6 months to sustain the maximum performance; Replaces OEM part # 68931, 68931A, 1397058, 606448, 68931-2, 68931A-2, 68931-2 DCF, 689312, 68931A-2, Electrolux EF91, EF91B, EF 91B, EF-91, EF-91B, 9001660803, Arm & Hammer Filter #64221-2, HQRP HEPA H13. Compatible with: Eureka Bagless Airspeed models: AS2013A, AS2030A, AS2111A, AS2113A, AS3001A, AS3011A, AS3012A, AS3030A, AS3033A, and AS3104A. Also fits 3270 and 4230 Series Vacuums Including 4235AZ, 4236AZ, 460AZ, SA3276AZ, UK4236AZ, UK4237AZ, 3276AVZ, 3276AZ, 3277AVZ, 3279AZ, 3281BZ, AirSpeed AS1000A, Electrolux Z3281AZ, Z3276AZ, Z3277AZ, Z4236AZ, Z4237AZ, ZAS10 Airspeed, Z32 Powerglide. Package contains: 2 (two) dust cup filter replacements; Product dimensions: 3.75 inches (diameter) x 4.25 inches (height);