We tore out the kitchen, walls and all, and I bought one of these at the local hardware store where I bought the new, bigger/better shopvac after the small one we had couldn't keep up. When that bag was almost full of plaster dust, I order more, they came quickly as always with Amazon Prime, and they kept us working. As promised, they don't leak all that dust and are worth the upgrade from regular bags. (Note: had to buy a new filter, too.)