Amaircare 93A16ST00ET 16" Easy Twist Annual Filter Replacement Kit - Standard. For Amaircare 16" Easy Twist Models AWW 350 / 675 ,7500, 10000 ETAmaircare 93 A 16ST00 ET filter kit contains; 1 x Foam Pre filter, 2 x Inner Carbon Blanket filters & 1 x O Ring Annual Filter Kit fits ; Amaircare Models 350, 675, 4000HV, 6000V, 7500 (x2), 10000 BEAM Models AWW350 and AWW675 FRIGIDAIRE Models FCF350 and FCF675 Lennox Models HEPA 40 and HEPA 60 SANITAIRE Models SA6000 and SA7000 (x2) SEARS Models 4000HV and 6000V Amaircare 93 A 16ST00 ET standard annual filter is good for one full year of operation