This filter set is an exact replacement for our Shark NV500 Rotator Lift-Away vacuum cleaner. Replacing the filters regularly vastly improve the performance of your vacuum cleaner. We have been doing sheetrock work and our filters become clogged quite easily, so these replacement filters are a real necessity for us. They look, fit, and perform exactly like the OEM Shark filters, and at a price savings too. We replaced our filter as soon as it arrived, which is good as our old filter was getting clogged with sheetrock dust.
You should replace your foam filter every 3 months (according to Shark), though I feel it should be more often. The hepafilter needs to be replaced annually and cleaned every time you replace the foam filter, which takes a small brush. It is easy and takes less than a minute for this most important maintenance. It will keep your vacuum working properly and keep it from wearing prematurely.
Note: this filter kit is only for the NV500 series of Shark Rotator vacuum, other series of Sharks use different filters. Check your vacuum for model number before ordering.