House is now listed for sale. I have one of these furnace filters new in the original box. Never installed. Genuine Aprilaire OEM model 401. Air Filters are designed for best efficiency and are the heart of your furnace / air purifier.
Filter fits the Aprilaire / Space Guard Model 2400 Air Purifier. High-efficiency MERV 10 rating. Lasts one to two years (Depending on the operation of your heating and/or air conditioning system). Instructions to change this are included on the box. Price is $15 cash in person. Check out the "more ads by this user" link to see the other items we are trying to part with.
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