Help continue to keep the air in your home or office smelling fresh by replacing your Hunter Air Purifier filters on a regular basis. This pack is designed for the Hunter QuietFlo Programmable True HEPA Air Purifier (item #489202, sold separately.) You receive 2 pre-filters and 1 True HEPA filter in this 3-pack. Carbon pre-filters maintain their effectiveness for 3-4 months and HEPA filters for approx. 6-12 months depending on air quality and use. But with this 180-day AutoShip program, you can be assured of virtually always having a fresh filter at hand when it's needed! Other details include: Hunter #30901 with 2 carbon pre-filters Hunter #30938 with 1 True HEPA filter pack Fit Hunter model #30170 air purifier About this AutoShip offer… AutoShip is a simple, convenient way to automatically receive favorite products you use every day - so you never have to worry about running out You receive FREE S&H on shipment of this item! By purchasing this item, you are agreeing to a convenient 180-day delivery of Hunter Air Purifiers, automatically billed to your credit card for the selling price plus FREE S&H per shipment of product, plus any applicable sales tax Choose item #562176 to purchase this item without AutoShip service AutoShip benefits: Convenient automatic delivery Price Guarantee: your low price will never increase as long as you remain an AutoShip member Added program benefit: Free shipping and handling on each shipment Custom AutoShip: Change or Skip deliveries at anytime to fit your individual needs · Cancel anytime: No risk - you may choose to end the AutoShip program at anytime without penalty To manage your AutoShip order, go to HSN.com, "My Account", or call 1.800.284.3900 from 8AM to 1AM EST About Hunter… “Whisper quiet” fans, air purifiers and humidifiers help you control the quality and circulation of air in your home. Air purifiers have a high Clean Air Delivery Rate (CADR), while HEPAtech technology helps remove pollen, dust, smoke, mold and animal dander from the air. Ceiling fans use powerful motors and larger blades that move more air, reducing heating and cooling costs. Humidifiers have a patented purification system that adds comfort by reducing static electricity. Programmable thermostats are easy to install and offer safety features like overheat protection.