Cross Tools Filter cartridge for NTAS 1200, metal, silver/black, 13.5 x 13.5 x 12 cm : Amazon.de: DIY & Tools
Milwaukee M18 FUEL 6 Gal. Cordless Wet/Dry Shop Vacuum W/Filter, Hose and AIR-TIP 1-1/4 in. - 2-1/2 in. Brush and Crevice Tools 0910-20-49-90-2035-49-90-2023 - The Home Depot
XPOWER X-2830 5-Speed White HEPA Air Purifier (Covers: 5500-sq ft) in the Air Purifiers department at Lowes.com