Review on Wunderbag Universal High Capacity Pre-Filters for Wet Dry Vacuums, 2 Pack - Maximize Cleaning Efficiency and Extend Vacuum Life! by Brittany Turner

They're not cheap but I like these bags. I recently had to remove a thin set, so I used an angle grinder with a dust extractor to do it. As you can imagine, it produces a ton of dust that will quickly clog a traditional canister filter. So I use these bags in my canister filter vacuum and it works great. Not only does it keep the suction strong, but it also keeps dust out of them and the exhaust, leaving the rest of the house dust-free. If you have a dusty indoor or outdoor job, this is the ticket.