Purchased for a Sun Joe 2.6 gallon wet/ dry vacuum cleaner. This opening of this Stanley vacuum bag is approximately 1.7 inches in diameter. I needed something at least 2.6 inches. So I cut slits around the perimeter to make it fit. It worked, but wasn't worth the trouble if I could find the right one. But the paper it's made of is pretty strong and easily fits in the vacuum cleaner. Good design. It just wasn't made for this vacuum cleaner.