I've been using these GOODVAC filters for a few years and they work just as well as the original Filter Queen filters. The pre-filter motor disks work in the same way. I have a Royale Empress with these filters. When I first started buying OEM filters they were around $12, but now they're off the charts at almost $40 and haven't changed. So why is there such a big price difference? Buy these GOODVACs and you can't go wrong!
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