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 8 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 for HPA090, 094, 100, 104, 105, HA106 Purifiers. REMOVE ODOR, SMELL, AND SMOKE - Made from Premium Quality Activated Carbon to help keep your home smelling and odor free. Perfect for households with pets, cooking, smokers & people suffering from asthma or allergies. Colour:Black Material:Activated carbon Size:275x190x5mm Package Contents: 8* carbon filter Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.