7 Pack Replacement Filters Compatible with Air Doctor 3000/3500 Series Air Purifier,3000/3500,3000M, 3000Pro Air Purifi-er,1 air filter, 2 Activated Carbn and 4 Extra Carbn Pre-Filters

: This 3500 Replacement Filters Set is expertly designed for compatible with 3000, 3000M, 3500, and 3500i air purifier, compare to the part No. ADF3001, ADF3002, ADF3003 and ADF3010. | : Our 3500 replacement filter for 3000, 3000M, 3500, and 3500i air purifier presents an excellent value pacakge, includes 1 Efficiency Filter Filter, 2 Activated Carbon Filter, 4 Pre-Filters | : Enjoy exceptional fresh air with our 3-stage filtration system 3000 filter replacement | : The 3500 filter works alongside the new fine sponge pre-filter and efficiency activated carbon filter. | : We recommend replacing the activated carbon every 6 months and the main every 12 months for optimal performance (depending on your usage).