The package contains 1 filter kit for Rowenta vacuum cleaner, i.e. 1 pre-filter, 1 post-filter The filters are compatible with Rowenta vacuum cleaner models RO3715、RO3715EA、RO3718、RO3718EA、RO3724、RO3724EA、RO3731、RO3731EA、RO3753、RO3753EA、RO3759、RO3759EA、RO3786、RO3786EA、RO3798、RO3798EA、RO3799、RO3799EA. Very effective. Rowenta vacuum cleaner filters can filter 99.7% of fine particles in the air, so that the air purified by the vacuum cleaner can be eliminated to reduce secondary pollution. The filter cassette is 150mm*90mm; the diameter of the round filter is 140mm. Easy to install. Please confirm the dimension of your old filter. The pre-motor filter is washable; the filter cassette can be dry cleaned.