Made of heavy-duty, ultra-strong paper that stands up to wear and tear, these filter bags are compatible with the Porter-Cable 7814 15-Gallon Wet/Dry Vacuum. The two-ply design guards against rips, while its ability to hold up to 15 gallons means less bag changes. Another plus is that these bags can be immediately sealed as soon as you remove it from the vacuum, helping to prevent messes.