Give your wet/dry vacuum new life with a fresh replacement filter that safeguards your motor. Choose the right filter for your specific needs this Vacmaster® standard cartridge filter excels at trapping general household and automotive dirt and debris. This filter fits most Ridgid® wet/dry vacs 9 gal or larger. A clean filter can optimize your vacuum's performance and increase your cleaning power. Durable materials and a wire mesh support structure increases rigidity to maintain suction power and effective filtration. Includes standard cartridge filter and retainer for use on most 5 to 20 gal wet/dry vacuums (excluding the portable jobsite, household and wall-mount models).