Make your home allergy free and breathe better, safer air: These HEPA filters are made to capture up to 99.97% of allergens and dust particles as small as 0.3 microns Sophisticated new design: The filtering of large surfaces without sacrificing on vacuum suction power became possible - easy to install and clean - replace every 1-2 months for peak performance Four replacement HEPA filters are included in each pack: Compatible with Neato D10, D9, D8, D7, D6, D4 machines, they are a crucial part of any Neato Robotics' kit Always use genuine Neato accessories: Third-party accessories may damage your electronic devices and void the warranty - take care of Neato electronic tools and keep your home clean The size of the filters are: 8"x 2.4" x 1.4" (20.2 cm x 6 cm x 3.6 cm) - they are white with an orange frame, a pleated design and a mesh, perfect for cleaning - instructions come in 6 languages