The Porter Cable 897884 dry vacuum filter cover is a protective component designed to enclose and support the vacuum’s dry filter during use. It works by fitting over the filter element, helping guide airflow while preventing debris from bypassing the filtration system or damaging internal parts. This cover supports efficient dust collection, maintains consistent suction, and helps ke... https://www.wholetoolbox.com/porter-cable-897884-dry-vacuum-filter-cover