So here is the review I was hoping for when deciding whether or not to buy these bags. arm and leg. I have previously taken a pair of 4 gallons. Bags at Lowes and paid about $13 for a 2 pack. Strange. I sanded a lot of drywall dirt, so I went through the bags pretty quickly. I am very happy to report that these bags fit my porter cable! The hole and the gasket are the same size, easy to install. Put the bag in the vacuum a little more carefully as it's a bit bigger and of course there's a lot of paper to deal with. Be careful not to pinch the bag when closing the lid. I can't say anything about long-term use or durability, but I'm definitely satisfied at the moment!