This filter is exactly the same as the one that came with my Rainbow. Just make sure you double check your model number as at some point Rainbow changed their filter! Like many filters, you can clean them with just warm water (no soap!) and shaking. To dry: put the filter back in the vacuum cleaner. Turn on the vacuum for 20 min. The vacuum will shake all the water from the filter onto the floor, so have a towel handy to wipe it off! Your filter will be well dried and ready to use.