Have the filter and bought it fits, but I understand the word not completely washable. One can already insert the thing in water and detergent, and brush the surface, but it is not clean, of course. The fine black dirt's baked permanently into the pores of the nonwoven filter and can not wash out. Maybe that was just a publicity stunt, I have to change the filter in any case. Too bad, somehow I can catch me from sustainability thought Washable.