This True HEPA air purifier filter is compatible with various Dyson Pure Hot + Cool Link and Dyson Pure Cool Link models, including HP02, HP01, HP00, DP03, DP01, and more. The filter captures up to 99.97% of particles as small as 0.1 microns, such as pollen, lint, household dust, pets dander, smoke, and smog. The dust holding feature ensures that particles are not released back into the air. The package includes one HEPA filter, recommended to be replaced every 12 months or as needed based on usage. With dimensions of 8.3 x 8.3 x 6.1 inches, this filter is made of polypropylene and is compatible with both air purifiers and heaters.