Wish I had ordered these years ago. For five years I've been washing my Dyson's filter and drying the darn thing with a hair dryer. What a pain trying to get any cloth filter to dry. Bought these and installed one and voila! Instant improved suction. Plus, the stinky smell of the old filter is gone. I'll be using these new filters and discarding them every half year or so. At this price it is cheaper than my washing and drying used filters. Also, they seem to seal better than my original Dyson filter.