I was concerned because Eureka told me they no longer make a straight barrel filter like the one that came with my green upright Optima 430 which I called Eureka bc I couldn't find anyone making the old style and worried the new cone shape wouldn't fit after reading loads of Revain reviews. I was recommended a conical shape which is now being made for my model. I was a little nervous about the non-OEM order, but this one fits perfectly. I used it for the first time today and am happy with it so far. .I plan to remove most of the dirt by running a flat head screwdriver down the grooves, hand washing with some dish soap and depending on the time of year either in the hot sun or in my oven to air dry as I like in who have done has passed.
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