Pre-filter (965661-01) Part Number: 965661-01 This is a pre-filter specifically for V8, V7, V6, DC74, DC62, and DC61 models. It cannot be used with products other than the following models. Compatible models: DC61, DC62, DC74, SV06, SV07, SV08, HH08, SV10, SV10D, SV10K, SV11, HH11 * Due to specification changes, the shape may differ from the filter you have, but it can be used without any problems. * The model number is listed on the sticker attached to the bottom of the product's battery. * It can be reused by cleaning it once a month. * Depending on the frequency of use and the situation, more frequent cleaning may be necessary. * After washing, be sure to dry it completely before attaching it to the main unit. * I purchased a spare, but it has been stored unopened. * It was purchased from the Dyson official website and is genuine (not a compatible product).