HQRP 2-Pack Cartridge Filter and 2-Pack Foam Sleeve for Shop-Vac 903-04-00 9030400 90304 903-50-00 9058500 905-85-00 90585 Vacuum Cleaner Coaster HQRP&reg; 2-Pack Cartridge Filter and 2-Pack Foam Sleeve plus HQRP&reg; Coaster; HQRP filters are washable and reusable! Cartridge Filter Dimensions: diameter: 7.4"; height: 6.7"; Compatible with Original filter; 2 weeks DOA replacement warranty!