CLEAN & AIR QUALITY: Replacement D Filter with Pre-Filter Fitted Carbon Sheet for AER1 removes pollen, dust, and odor indoors to keep your house's air quality safe and clean to in. TRUE HEPA FILTRATION: True HEPA purifier performance catches up to 99.97% of particles in the air and traps it into filter panels; great for allergy sufferers and germophobes who to remove allergens that makes it hard to . LONG LASTING : This filter generally lasts for 6 months needing to be replaced so you can enjoy clean and filtered air for long. EASY INSTALL & REPLACEMENT: This filter is designed to fit Air Purifier Filter D; the filter indicator light for your model alerts you to replace it, simply take out the old one and mount the new unit into the filter slot. Simple, quick, and easy with no tools required. DELIVERS EXCEPTIONAL PERFORMANCE: filter from us made from material and will as excellently as filters. You are performance from your air purifier with filters. colour:purple & black Material:Composite material Package Contents: 4 * Replacement Filter 8 * carbon spray sponge 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.