????. The Package Includes 2Pcs Dcf-21 / Ef 91B Suction Vacuum Filters And 1Pc Ef-6 Exhaust Filter, Replaces Part # 67821, 68931, 68931A, Ef91, Ef-91, Ef-91B 69963. | | ????. For Best Performance, Replacing The Vacuum Cleaner Filter Is Necessary To Maximize The Cleaning Power. More Helpful Deep Cleaning Across Floor Surface,Reduce Broken Hair And Other Particles. | | ????. Dcf-21 Filter Compatible With Eureka As1001, As1040, As1061A, 3270, 3272Av, 3280, 4230, 4240, 8810, 8860 , 8870 ,3270, 3276Avz, 3276Az, 3277Avz, 3279Az, 4230, 4235Az, 4236Az, 4236Az Series Comfort Clean Upright Vacuums Cleaner. | | ????. How To Install Ef-6 : Remove The Top Round Canister ?The Front Rectangle Filter Was Hidden Behind The Canister), Open The Fixing Plate, And Remove The Old And Dirty Filter , Then Install A New Replaces Vacuum Cleaner Filter . | | ????. Ef 6 Filter Compatible With Air Speed Eureka As1001,As1000, As1000A, As1001A, As1004A Series Upright Vacuums. | |