I bought this with a regular internal filter. The cheap internal filter didn't trap or hold dust, so the inside was full of dust that spurted out when I tried to change the filter (which wasn't the case with previous brand filters). This filter did the same. And it released the dust and dirt I just picked up back into the air and all over the vacuum cleaner. Made more mess. It also has no odor protection. I bought it to save money but it wasn't worth it.