COMPLETE REPLACEMENT - Our carbon pre-filters greatly reduce the amount of dust & particles getting into your main filter. Replacing your main HEPA filter is costly so with 12 pre-filters, you can save both time & money. NO MORE MEASURING AND CUTTING - Measuring and cutting filters is time-consuming and potentially inaccurate. Now you can replace your dirty old filter in a matter of minutes These are specially cut and designed to fit HPA200, 202, 204, 250B Air Purifiers. REMOVE ODOR, SMELL, AND SMOKE - Made from Premium Quality Activated Carbon to help keep your home smelling fresh and odor-free. Perfect for households with pets, cooking, smokers & people suffering from asthma or allergies. colour: black Material: activated carbon Size: 360x290x5mm Package Contents: 12 x HPA200 Filter cotton Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.