Too big for a Hoover Porta-Vac but no other options. What am I doing. Cut the open end of the bag about 1 inch. Fits better. But don't cut off too much, the other end of the bag still needs to touch the back of the machine when you put it in. If you cut too short you'll see the air being blown in slide off that strip and then you'll have to clean up the mess. I hope that makes sense.