Milwaukee 49 90 1900 Cartridge Filter Fits Vacuum 0880 20 Models, HEPA, Wet Dry G4614937 UL Listed UL 94 Flammability UL Listed UL 94 Flammability Rating V 2 Special Features Expanding Square Wire Spring and Polypropylene Shell Deliver a Secure Connection Every Time Spray Nozzles Features Easy Cartridge Replacement and Cartridges Remain Sealed until Activated In Solution Shelf Life 2 yr Mixing Ratio Premix Solution Shelf Life 2 yr Brand Honeywell Accessory Type Saline Cartridge Series Fendall 1000 Compatible Mfr Part Number 32 001000 0000 Sub Brand Honeywell Safety Container Capacity 3 Fits Vacuum Brand Milwaukee Filter Pickup Type Wet Dry