Review on Ultra Web Cartridge Filter Wet Pickup by Melissa Paige

I blame myself for not seeing the same information on the filter. However, do not use this on Master 16 liters. The reason for this is that the nut holding the filter is a simple friction lock that does NOT screw on. I used a vacuum cleaner with cement dust and only destroy dust, looked back and saw that there was dust everywhere. Pooh. So I put the filter back on, snapped the top of the vacuum back up and it fell off again. What an absolutely stupid design.