Review on 🔍 Purchasing POWERTEC 75007 Outer Filter for POWERTEC AF4000/ WEN 3410/ Shop Fox W1830 Air Filtration System – The Ultimate 1PK Filter Solution by Michael Luna

As you might suspect, many of these air filters are the same, they just have different branding stickers or slightly different characteristics. The Rikon 400 air filters listed are significantly more expensive than these, but they fit almost perfectly. I think there was a 2mm difference on one of the sizes, which wasn't enough to worry about the filter bag behind it. So if you have a Rikon device and want to save money, this is your best choice. I'll stock up on a few as I use a lot of air filters.