Shop Vac 9039800 Hangup Cartridge Filter for Shop Vac. Replaces part number 90398-00. This part is used on shop vacs. Part fits model number QMH45A. 11-Inch long, 8-Inch wide, and 2-Inch high. Package weight of this item is 2-Pound. The recognized leader in wet/dry vacuums for more than 40 years. Shop-Vac Corporation offers the most complete line of vacuum cleaners and accessories available for consumer, industrial and commercial applications.