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Concerning this item:
For Shark models NV500, NV501, NV502, NV503, NV505, NV510, NV520, NV552, UV560, replacement foam and felt filter and HEPA filter
It is not compatible with Shark Rotator models NV650 & NV750, NV755 & UV795, NV680 & NV800.
Material: 100% compatible with the original machine, made of high-strength, environmentally friendly material.
Advice: Replacing them every 3–6 months is advised for your vacuum cleaner's best performance.