The F631 DC50 replacement washable pre-filter is designed to fit Dyson DC50 series models. It is recommended washing this filter every 6 months to keep your Dyson vacuum cleaner operating at peak performance. It is important to make sure the filter is 100% dry before putting back in the vacuum. Doing so can cause damage to the motor. If you have any questions please call 1-800-322-2965 and one of our vacuum experts will be happy to assist you.
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