If you own a Shop-Vac, you know how essential good filter bags are - and this 10-pack of Type E bags has been working perfectly for my 5-gallon wet/dry vac. They're compatible with all the standard part numbers - 9066100, 90661, 906-61 - and fit just like the original manufacturer bags. Each bag measures about 31.5x11.81x4 inches, which gives you plenty of capacity before needing to change it out. What I really appreciate is how much better these are for collecting fine dust and debris compared to just using the vacuum without a bag. They're designed for dry pickup only, so keep that in mind - but for sawdust, drywall dust, wood chips, and general construction debris, they work amazingly well. The installation is foolproof - just slide the bag over the intake tube inside your vacuum and you're good to go. When it's full, you just pull the bag out and toss it - no more dealing with clouds of dust when you empty the canister. The package even comes with a handy cleaning brush, which is a nice bonus. I've been through several boxes of these now for various home renovation projects, and they've consistently held up without tearing or leaking fine particles. If you use your Shop-Vac regularly for workshop cleanup, construction projects, or even just heavy-duty home cleaning, having a supply of these filter bags on hand will make your life so much easier and keep your vacuum running efficiently!