WORKSHOP wet dry vacuum bags are designed to collect dry, everyday dirt and fine particle debris like drywall dust in a convenient to dispose of bag. While they are not required for a vacuum they can make debris disposal quicker, faster, and cleaner. These wet dry vacuum cleaner bags fit WORKSHOP 12-16 gallon shop vacuums except the WS1200DE and WS1600VA. Not for wet use. A cartridge filter should always be used in conjunction with shop vacuum bags to protect the vacuum in the event of a bag tearing.