Review on Enhanced Cleaning Performance with Shop Vac 9034000 Cleanstream Filter: The Ultimate Solution for a Spotless Home by Brett Jarvis

Since the standard filters let through a lot of very fine dust, I blew my Shop-Vac out of the window over 2000 square meters while plastering and sanding. Foot parquet - then I bought this filter. This removed any visible dust from the exhaust pipe. My only complaint is that these HEPA filters are not as easy to clean as the manufacturer claims. Whether you're working with plaster, stone, or sawdust from a grinder or edger, too much dust inevitably sticks directly to the filter instead of falling to the bottom of the vacuum, and it takes a lot more than just shaking or tapping. Filter lightly to remove caked dust. I've had the best results holding the filter at both ends (upwind) and tapping the inside of the barrel or dumpster, but even then I also had to run my finger lightly across the folds of the harmonica to close the filter bend and get the last one out. Clumps of dust crumble.