These filters fit my Shopvac 5275 so they are worth something but they didn't come with the all important mounting cap which not only keeps the filter cartridge in place but closes also at the bottom to prevent dust from entering the cartridge. I bought another cartridge elsewhere for about the same price and it came with a locking cap so I could end up using it. However, only 3 stars because my Shopvac originally did not have a paper cartridge and I urgently needed this fixative.